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mike <ham789@netzero.net>: Feb 12 03:51PM -0800 On 2/12/2015 9:25 AM, Jeff Liebermann wrote: > take into consideration my instrument inaccuracies. The trick is to > target the oven temperature between these two temperatures so that the > BGA balls reflow, but the components on the PCB are untouched.   I suspected that one should use the lead-free profiles. ??? > work is that the thermal mass of the cheap junk oven is very small > compared to a proper oven with insulation, firebrick, and a proper > controller.   I've been afraid to put a whole motherboard in a toaster oven, assuming I could find one big enough. There's lots of plastic stuff/connectors etc on the board. Most toaster ovens have exposed elements. You get lots of infrared and a variable amount of convection heating. That scares me too. Thought about putting reflective foil everywhere but the chip and count on the IR to do it. But it's completely uncontrolled.     > candidate laptops waiting, but the PCB's are still in the laptops. It > will take time to extract and retest them. Probably next month.   > Good luck.   My current tooling consists of a bottom heater made from an old TIVO case. I cut a 2"x2" hole in the top for the BGA chip area to sit on and drilled a hole in the side for a power-controlled heat gun. Welded some baffles inside to guide the air from the heat gun to the square hole.   I sit the board over the hole with thermocouples on the underside and touching the BGA on the top. Aluminum foil protects the part of the top that's not the BGA. Flux applied.   Top gets heated with a commercial SMT rework heat gun with precise air temperature control. My air compressor is running wide open and I'm taking all the air flow I can get.   I know what package temperatures I want and have some idea from the thermocouples.   What I don't know is what air temperature I should be using from the heat guns.   Too low won't get it all hot enough. Too high will burn something.   I was hoping to avoid a bunch of experiments to determine it empirically. Would be nice to have a target temperature to start from.   This site is interesting: https://www.youtube.com/watch?v=c_Qt5CtUlqY   I hava a Maxtra 852D+ rework station. It's capable of 550W, but the air flow isn't high enough to keep the heater duty cycle high. I have very little actual experience with the unit. And my thermocouples read the air temperature 30C lower than the digital readout. Very small changes in position make radical differences in the measured temperatures.   I seek less ambiguity ;-)

ALFREDO PIACENTINI DECALIA GENEVE <dieffedue@gmx.com>: Feb 15 05:29AM -0800 PUZZONE PEZZO DI MERDA DAVIDE SERRA (TWITTER & ALGEBRIS) HA BECCATO L'INSIDER SULLE BANCHE POPOLARI DAL MEGALAVA SOLDI MAFIOSI PIER LUIGI BOSCHI DI BANCA ETRURIA. SON TUTTI FASCIOCAMORRISTI, TIPO VERME PAOLO BARRAI DI WMO, CHE SI FINGONO DEL PD X..   CRIMINALISSIMO PEZZO DI MERDA DAVIDE SERRA DI ALGEBRIS E TWITTER HA RICEVUTO, ANZI, HA LUI STESSO ARCHITETTATO ( COSA MOLTISSIMO PIU´ GRAVE) L'INSIDER TRADING SULLE BANCHE POPOLARI BECCATO DAL BASTARDO DITTATORE BERLUS-CO-RROTTISSIMO MATTEO RENZI ( UNITO ALLA BAGASCIONA BERLUS-CO-RROTTISSIMA MARIA ELENA BOSCHI, ED IL, DI QUEST´ULTIMA, DELINQUENTISSIMO PADRE, NOTO MEGA LAVA SOLDI MAFIOSI, PIER LUIGI BOSCHI DI AREZZO E BANCA ETRURIA). ED HA PURE RAGLIATO CHE COMPRA BANCHE POPOLARI " BEN" DAL MARZO 2014. SPUTTANANDOSI ANCORA DI PIU', COME UN IMBECILLE, COME UN PEDERASTA SODOMIZZA BAMBINI IN TANZANIA, COME UN MEGA COCAINOMANE, QUALE DA SEMPRE STO PUZZONE LERCISSIMO COLLETTO DI DAVIDE SERRA, DA SEMPRE E'. NON PER NIENTE... IL SUO CESSO STECCATISSIMO MATTEO RENZI (CHE VIA "SS", SPINTA E STECCHE DI SILVIO BERLUSCONI E DAVIDE SERRA, HA SCIPPATO SEGRETERIA PD E PALAZZO CHIGI, NEL SECONDO CASO COL FEBBRAIO 2014), HA RICEVUTO DA STO PORCO HITLERIANO DI ALGEBRIS, INDICAZIONI, ANZI, ASSOLUTISSIMI ORDINI, SU COME RIFORMARE LE POPOLARI. NEL FEBBRAIO 2014 STESSO. "OVVISSIMAMENTE", DETTO IMMENSO PAPPA TANGENTI DI MATTEO RENZI HA OBBEDITO AGLI ORDINI, E PER QUESTO, STO TOPASTRO DI FOGNA NAZISTA, ANZI, STO TOPASTRO DI FOG-NA-ZISTA DI DAVIDE SERRA DI TWITTER ED ALGEBRIS, SI E' MESSO A COMPRARE BANCHE POPOLARI, OHIBO', GUARDA CASO, DAL MARZO 2014. UN MESE DOPO LO SCIPPO FASCIOCAMORRISTA DI MATTEO RENZI DI PALAZZO CHIGI (ULLALA' CHE COINCIDENZA, ULLALA'). INSIDER ARCHITETTATO DAL NUOVO BERNARD MADOFF, OSSIA DAVIDE SERRA, IN PIENISSIMO, E'. TRATTASI DI MANDRIA DI PORCI FASCIOCAMORRISTI, TIPO, ANCHE, NOTO AVANZO DI GALERA PAOLO BARRAI (DI CRIMINALISSIME WMO, BSI ITALIA SRL DI VIA SOCRATE 26 MILANO E BLOG "MERDATO"LIBERO), CHE SI FINGONO DEL PD, X... DISTRUGGERLO, INFILTRARLO A MORTE, RENDERLO DIARREA BERLUSCONICCHIA! VOGLIAMO UNA ACCESISSIMA E VINCENTISSIMA REVOLUCIOOOOOON! VOGLIAMO IL CANCROMICIDA DEL MONDO INTERO, SILVIO BERLUSCONI, FALLITO ED IN GALERA! SUBITO! PLS, DOTTOR SERGIO MATTARELLA, CI DIA UNA MANO. IN ONORE A SUO FRATELLO UCCISO DALLA MAFIA ( MAFIA CHE QUANDO SI METTE LA FASCISTISSIMA CRAVATTA DOLCE E GABBANA, SIGNIFICA SILVIO BERLUSCONI E DAVIDE SERRA). IN ONORE AD ETERNI GIOVANNI FALCONE E PAOLO BORSELLINO, FATTI SPAPPOLARE, SICURISSIMAMENTE, DA SILVIO BERLUSCONI, VIA, A SUA VOLTA, BERLUSCONIANISSIMA COSA NOSTRA! ED OLTRE A VOLER SILVIO BERLUSCONI FALLITO ED IN GALERA, VOGLIAMO VEDERE IL SUO PICCIOTTO INCRAVATTATO, IL FACCENDIERE DI BERLUSCONAZISTI, PADANAZISTI, E CRIMINALITA' ORGANIZZATE DI MEZZO MONDO, PAOLO BARRAI DI MALAVITOSA WMO, PURE, IN GALERA! VOGLIAMO IL NUOVO GIANCARLO LANDE, IL NUOVO BERNARD MADOFF, IL NUOVO MICHELE SINDONA, VERME CRIMINALISSIMO DAVIDE SERRA DI TWITTER ED ALGEBRIS, FALLITO, E PER LO MENO, PER QUALCHE MESE, IN GALERA! CHE SIA ETICISSSIMA E VINCENTISSIMA REVOLUCIOOOOON!   COME DA OTTIMO SITO INFORMARE X RESISTERE: http://www.informarexresistere.fr/2015/01/27/qualcuno-sapeva-in-anticipo-che-il-governo-avrebbe-varato-un-provvedimento-sulle-banche-popolari-enormi-speculazioni/ COME DA CORRIERE DELLA SERA, DI, OTTIMAMENTE, ANTIRENZUSCONIANO FERRUCCIO DE BORTOLI, DA NON TOCCARE E A TUTTI I COSTI: http://www.corriere.it/economia/15_gennaio_24/quei-movimenti-un-po-sospetti-popolari-f59ffb1c-a3a5-11e4-808e-442fa7f91611.shtml Acquisti consistenti prima della riforma che ha abolito il voto capitario. La famiglia Boschi ha sicurissimamente passato insider trading a Londra, tramite noto ladro, truffatore, nazifascista, immensamente ricicla soldi mafiosi, che affatto va' in Tanzania a fare del bene, in quanto vi va' a riciclare cash di (sua) LL Lega Ladrona, come per suoi gusti sessuali di tipo depravatissimo: avanzo di galera Davide Serra di Algebris e Twitter. Dove prenderanno, le mazzette, ora, i vermi nazifascisti Pier Luigi Boschi di Banca Etruria e sua zoccolona ( di fatto) Berlusconicchia Maria Elena Boschi ( bastarda puttanazista che vuole sgozzare la giustizia via estremissimamente ingiusta salvaberlusconi http://www.blitzquotidiano.it/rassegna-stampa/libero-renzi-per-fare-la-pace-offre-la-salva-berlusconi-che-fara-mattarella-2090491/ .... che qui, non per niente, slingua un topo di fogna corrotto, ndranghetista, fascista, estortore di soldi alla Banca Popolare di Lodihttp://www.repubblica.it/2005/l/sezioni/economia/banche21/ipolitici/ipolitici.html .. pezzo di merda criminalissimo Paolo Romani http://www.corriere.it/methode_image/2014/08/08/Politica/Foto%20Politica%20-%20Trattate/6ebdfe07bdd8cb1fe88af8343f8a5b1c-012-kXsC-U43030145012273wcB-593x443@Corriere-Web-Sezioni.jpg?v=20140808175213 )? A) Alle Bahamas B) Alle Bermuda C) A Panama D) Ad Hong Kong E) A Singapore F) Alle Mauritius ( "roba" tipo Svizzera e' da anni 70, 80: stile nazimafioso pedofilo Silvio Berlusconi e suo B-o-ttino Craxi.. dai.. please) Lauti premi a chi azzecca per primo. --- BRAVO, BRAVO, DAVVERO BRAVISSIMO ELIO LANNUTTI A QUERELARE STO VERME BERLUS-CORROTTTISSIMO DI MATTEO RENZI: http://www.ilfattoquotidiano.it/2015/01/21/denuncia-per-renzi/1357263/ CHE SBEFFEGGIA PM PER BENE, EROICI, SALVA NAZIONE ( SPESSO FATTI ESPLODERE, COME IL NAZIMAFIOSO PEDOFILO STRAGISTA SILVIO BERLUSCONI FECE FARE CON GLI ETERNI GIOVANNI FALCONE E PAOLO BORSELLINO). TIPO QUELLI DI PALERMO, BARI, MILANO, NAPOLI, DICENDO, ANZI, RAGLIANDO LORO: "'OOOO OO CHE PAURA, MI FANNO, OO OO" http://tv.ilfattoquotidiano.it/2014/09/10/renzi-anm-protesta-brrrrr-che-paura-sciopero-sindacati-polizia-illegale/295911/ CHE RABBIA MOSTRUOSISSIMA, QUESTO VERMINOSO, CRIMINALISSIMO TRAFFICARE FRA POR-CO-RRUTTORE MAXIMO SILVIO BERLUSCONI E POR-CO-RROTTO MAXIMO MATTEO RENZI! https://ilgrandetsunami.wordpress.com/2015/01/17/berlusconi-che-ne-sara-di-me-il-2-febbraio-carmelo-lopapa/ "IO TI VOTO LE RIFORME (ODIOSISSIMAMENTE MAFIOSE E FASCISTE, OSSIA BERLUSCONIANISSIME) CHE STAI APPRONTANDO ( VEDI SENATORI NON ELETTI E CAPOLISTA BLOCCATI, COSA CHE ANCHE I VERMINOSI MATTEO RENZI E SILVIO BERLUSCONI DEGLI ULTIMI 8 DECENNI, OSSIA ADOLF HITLER, BENITO MUSSOLINI, ALFREDO STROESSNER, FRANCISCO FRANCO, EMILIO EDUARDO MASSERA, AUGUSTO PINOCHET E POL POT AVREBBERO SENTITO TANTISSIMO PUDORE AL SOL PROVARE A PENSARNE), TU METTI AL QUIRINALE UN FANTOCCIO DI MIA PROPRIETA' CHE COMPRO QUANDO VOGLIO QUALE GIULIANO AMATO, VALTER VELTRONI O ANNA FINOCCHIARO ... O MEGLIO ANCORA, SE PARLIAMO DI MIEI FASCIOBAMBOCCI ALLA PIERFERDINANDO CASINI O GIANNI LETTA... TUTTI MIEI PUPAZZI CHE MI HAN GIA' GARANTITO CHE CON SEI EURO E MEZZO CASH, MI FIRMEREBBERO TUTTE LE GRAZIE CHE VOGLIO IN NOME DELLA MIA.... PACIFICAZIONE ALLA VASELLINA... E ... SPECIALMENTE ...GIUSTO PER ANDARE SUL SICURO.... MI FAI ANCHE E SUBITO UNA NORMINA DECAPITANTE NOIOSISSIMI CONCETTI COME DEMOCRAZIA E GIUSTIZIA CHE IMPONGA IL MIO TORNARE IN POLITICA, COSI' CHE POSSA FOTTERE IL POPOLO CIUCCIO, LE LEGGI, DOZZINE DI (GRANDISSIMI) MAGISTRATI COME ILDA BOCASSINI, EDMONDO BRUTI LIBERATI, NINO DI MATTEO, ROBERTO SCARPINATO, FABIO DE PASQUALE, HENRY WOODCOCK, PASQUALE DRAGO, ATTRAVERSO LA ( BASTARDAMENTE VIGLIACCHISSIMA) IMMUNITA' EVITA GALERA, CHE MI RI RITROVEREI"! http://www.ilfattoquotidiano.it/2015/01/18/salva-berlusconi-alessandro-pace-manina-renzi-reato-falso/1349562/ http://www.ilfattoquotidiano.it/2015/01/08/salva-berlusconi-mucchetti-renzi-venga-senato-spiegare-successo/1322595/ http://www.ilfattoquotidiano.it/2015/01/06/salva-berlusconi-coppi-ammette-quella-norma-segnale-per-quirinale/1318110/ ECCO DOVE CI PORTANO BASTARDI LAVA CASH MAFIOSO A GO GO COME I MALAVITOSINCRAVATTATI DAVIDE SERRA DI ALGEBRIS E TWITTER INSIEME AL RENATO VALLANZASCA UNITO AD UGO FANTOZZI DELLA FINANZA, NOTO AVANZO DI GALERA PAOLO BARRAI NATO A MILANO IL 28.6.1965, DI CRIMINALISSIMO WMO, CRIMINALISSIMA BSI ITALIA SRL DI VIA SOCRATE 26 MILANO E CRIMINALISSIMO BLOG MERCATO "MERDATO" LIBERO ( DUE VERMI REPELLENTI CHE RICICLANO ALL'ESTERO VAGONI DI SOLDI DI COSA NOSTRA, CAMORRA, NDRANGHETA O LADRATI SE NON PURE FRUTTO DI MEGA MAZZETTE IN DIREZIONE LL LEGA LADRONA ED EX PDL POPOLO DI LADRONI; IN CONGIUNZIONE CON BANCHIERI DELINQUENTISSIMI, SPESSO PURE MANDANTI DI OMICIDI O "SUICIDATE", COME FATTO CON DAVID ROSSI DI MONTE PASCHI, QUALI GLI ASSASSINI ENNIO DORIS E MASSIMO DORIS DI BANCA MEDIOLANUM; O QUALE "O MASSONE CAMORRISTA" GIUSEPPE SABATO DI BANCA ESPERIA http://www.gruppoesperia.it/chi-siamo/giuseppe-sabato.html https://books.google.it/books?id=B1mEj0GtktIC&pg=PT304&lpg=PT304&dq=GIUSEPPE+SABATO+LICIO+GELLI&source=bl&ots=Gqtu0KYRmD&sig=d2TOz9sZDY6563zIPxwnNYcbxb4&hl=it&sa=X&ei=I-i_VOOsBMLlUonCgZgI&ved=0CFMQ6AEwCA#v=onepage&q=GIUSEPPE%20SABATO%20LICIO%20GELLI&f=false TUTTI DEL GRUPPO MA-F-INIVEST DI " STEFANO BONTATE, MARCELLO DELL'UTRI, TOTO RIINA, LICIO GELLI, BERNARDO PROVENZANO E SILVIO BERLUSCONI: " OO CHE CASO, OO")! E PROPRIO MENTRE VIENO ACCLARATO CHE STO VERME COLERICO E STECCATISSIMO DI MATTEO RENZI, COME INTUITO DA GENIO BORSISTICO ED EROE CIVILE MICHELE NISTA DA ANNI E NON "SOLO" 11 MESI, E' IN POLITICA, IN PRIMIS, PER PROTEGGERE IL TOPO DI FOGNA DI SUO PADRE, TIZIANO RENZI. ACCERTATO BANCAROTTIERE FRAUDOLENTISSIMO, ACCERTATO NEOPIDUISTA LADRONE E TRUFFATORE! CHE HA SODOMIZZATO UN MILIONE DI EURO A FIDI TOSCANA E LI HA FATTI PAGARE AL POPOLO CIUCCIO, VIA SUO BASTARDO NAZIMAFIOSO POR-CO-RROTTO DITTATORE MATTEO RENZI! http://www.beppegrillo.it/2015/01/i_conflitti_dinteressi_della_famiglia_renzie.html https://www.youtube.com/watch?v=A7Ngp6JrK9A http://robertoiacobone.altervista.org/debiti-azienda-di-famiglia-renzi-pagati-dal-governo-renzi/?doing_wp_cron=1421500410.9769570827484130859375 VOGLIAMO A PALAZZO CHIGI STEFANO FASSINA SUBITO! INSIEME AL PD PER BENE, QUELLO ANTI MAFIA FASCISTA DI MATTEO RENZI! INSIEME, OVVIAMENTE, A M5S E SEL! A FARE IL SUO VERO LAVORO, OSSIA LA ZOCCOLA DI STRADA, STA BATTONA HITLERIANA, CHE SI CREDE MODELLA MA E' CESSO STRA COLMO DI CELLULITE, DI MARIA ELENA BOSCHIhttp://www.dagospia.com/img/foto/08-2014/maria-elena-boschi-bikini-rosa-in-spiaggia-a-marina-di-pietrasanta-581617_tn.jpg FIGLIA DI ALTRO VERME CRIMINALISSIMO: MEGA LAVA SOLDI MAFIOSI PIER LUIGI BOSCHI DI BANCA ETRURIA (DOPO AVER PASSATO TUTTA UNA VITA A TRAFFICARE CON COOP VICINISSIME A MAFIA, CAMORRA E NDRANGHETA, NON PER NIENTE, STILE "RENZUSCONIANISSIMI" SALVATORE BUZZI E MASSIMO CARMINATI)! AL QUIRINALE UN UOMO O DONNA VERA, ALLA NINO DI MATTEO O ILDA BOCASSINI, CHE FACCIA TRASLOCARE IL CANCROMICIDA DEL MONDO INTERO, SILVIO BERLUSCONI, DA PALAZZO GRAZIOLI A PALAZZO UCCIARDONE E SUBITO. O VERA RIVOLUZIONE SARA'! RIVOLUZIONE RIPRISTINANTE VERA DEMOCRACIA Y LIBERTAD! PS SEMPRE VINCENTISSIMI I GENI BORSISTICI GEORGE SOROS E MICHELE NISTA A PUNTARE SULLA SPAGNA. PARREBBE CHE DOPO AVER SAPUTO CHE IL MIGLIORE FIUTO PER QUALSIASI COSA AL MONDO, MICHELE NISTA, VEDA NON MALE LA SPAGNA, GEORGE SOROS ABBIA DECISO DI METTERCI SUBITO, MANCO FOSSERO NOCCIOLINE, 500 MILIONI DI EURO, NELL'AUMENTO DI CAPITALE DI BANCO SANTANDER. NON SARA' UN PAESE IMMUNE DI DIFETTI, LA SPAGNA, COME NON LO E' ALCUN PAESE DEL PIANETA TERRA. ANCHE LI, GLI SCANDALI PER CORRUZIONE NON MANCANO ( MA SONO AL MASSIMO UN DECIMO, RISPETTO A QUELLI DELLA CLOACA DI RENZUSCONIA)! PERO', NONOSTANTE MEZZO SECOLO DI NAZIFASCISMO, OGGI LI VI E' DEMOCRAZIA VERA. SIA AL POTERE MARIANO RAJOY DELL'OPUS DEI O IL PROMETTENTISSIMO PABLO IGLESIAS DI PODEMOS. NON VI SONO, SULLA GOVERNATIVA POLTRONA DI MADRID, VERMI STRAGISTI, FASCIOCAMORRISTI E PEDOFILI ALLA SILVIO BERLUSCONI, CHE SI FAN LE LEGGI PER GONFIARSI LE TASCHE DI SOLDI LERCISSIMI OLTRE CHE PER SGOZZARE A MORTE DEMOCRAZIA E GIUSTIZIA, OGNI GIORNO. E QUESTO, O IN PROPRIO, O COMPRANDOSI RAGAZZINI CORROTTISSIMI CHIAMANTISI MATTEO, COME MATTEO RENZI ( OGGI). O IL NUOVO ADOLF HITLER: MATTEO SALVINI (DOMANI). MENTRE L'UNICO PADRONE, L'UNICO VERO BOSS DEL CANCROMICIDA DEL MONDO INTERO, SILVIO BERLUSCONI, UN ALTRO MATTEO, MATTEO MESSINA DENARO, SORRIDE E DICE " BRAVO MIO PRESTANOME BEDDU SILVIO BERLUSCONI, HAI TRASFORMATO L'ITALIA IN RENZUSCONIA, CHE IN REALTA' SEMPRE BERLUSCONIA E', AAAAAAA... COME PIACE A MMMIA, AAAA.... E' TUTTO UNA COSA NOSTRA, SILVIUZZEDDU BEDDU .. CONTINUA COSI' CHE TI TROVIAMO QUALCHE ALTRA BEDDA PROSTITUTA DI 12-14 ANNI PELLU TEMPU LIBERO, AAAAA.... QUESTA VOLTA CAMBIAMO, AAAA... TE LA TROVIAMO FILIPPINA E LA FACCIAMO PASSARE PER LA NIPOTE DEL RE DELLA THAILANDIA, BHUMIBOL ADULYADEJ, IL RE PIU' RICCO DEL MONDO... CHE SPESSO E VOLENTIERI "ABOLISCE UFFICIALISSIMAMENTE LA DEMOCRAZIA"... SI... SILVIUZZEDDU BEDDU DA COSA NOSTRA, TI TROVIAMO UNA BAMBINA FILIPPINA DI 12 ANNI DA SBAVARE E TOCCARE QUANTO VUOI... E LA FACCIAMO PASSARE PER LA NIPOTE THAILANDESE DI BHUMIBOL ADULYADEJ, AAAA.... COSI' VEDRAI CHE QUANDO TELEFONI, PREOCCUPATISSIMO, DA PARIGI ( TANTO, FRA POCO, NELLA TUA DITTATURA DELLE BANANAS DI RENZUSCONIA, SUBITO, IL PASSAPORTO, TI RIDARANNO), I POLIZIOTTI O QUESTORI, SOLO E SEMPRE LA TUA VOLONTA', FARANNO, AAA"!!!

bleachbot <bleachbot@httrack.com>: Feb 15 02:29PM +0100

whit3rd <whit3rd@gmail.com>: Feb 14 01:36PM -0800 On Friday, February 13, 2015 at 4:01:02 PM UTC-8, Phil Allison wrote:   > See hi-res pic of soldering gun tranny.   > http://en.wikipedia.org/wiki/Soldering_gun   > Note use of copper strip and close coupling of the secondary.   That's NOT a hairpin secondary! Look instead at this   <https://plus.google.com/photos/118343199678883181101/albums/6115815766613132033/6115815770882958370?banner=pwa&pid=6115815770882958370&oid=118343199678883181101>   Even if the transformer manufacturer works on good flux coupling, the external loop of the iron's tip will leak lots of flux; you should expect every CRT in the vicinity to shimmy while you hold down the trigger. There's no particular reason to care, in this case.

Phil Allison <pallison49@gmail.com>: Feb 14 05:34PM -0800 whit3rd wrote:     > > Note use of copper strip and close coupling of the secondary.   > That's NOT a hairpin secondary! Look instead at this   > <https://plus.google.com/photos/118343199678883181101/albums/6115815766613132033/6115815770882958370?banner=pwa&pid=6115815770882958370&oid=118343199678883181101>   ** So it's a one turn secondary on a toroidal core.   Magnetic coupling will be poor, but still good enough for a soldering tool.     > Even if the transformer manufacturer works on good flux coupling, the external > loop of the iron's tip will leak lots of flux;     ** Any external flux will come from the iron core, not the loop. Removing the soldering tip will not eliminate external flux or even reduce it much.       ... Phil

mike <ham789@netzero.net>: Feb 14 11:12PM -0800 On 2/13/2015 11:58 PM, Phil Allison wrote:   > Switching on at a voltage peak, while under load, is the best option.   > A triac switch will always go off near zero current, which will be nowhere near zero volts.   > ... Phil   Well, I don't recall mentioning volts at all. Yes, triacs switch off at the zero crossing of the current. Not much you can do about that.   I question not turning it on at zero volts??? Please explain the large in-rush current when there's zero volts on the transformer primary?

Phil Allison <pallison49@gmail.com>: Feb 14 11:43PM -0800 mike wrote:       > > Switching on at a voltage peak, while under load, is the best option.   > > A triac switch will always go off near zero current, which will be nowhere near zero volts.   > Well, I don't recall mentioning volts at all.   ** You did, cos "zero crossing" means at zero voltage crossings.     > Yes, triacs switch off at the zero crossing of the current. > Not much you can do about that.     ** Then why did you say it was needed ??   > I question not turning it on at zero volts???     ** Really ? Did you try Googling the topic?     > Please explain the large in-rush current when there's zero volts > on the transformer primary?     ** The surge current peak comes a little after the first voltage peak.   Consider that it takes half the time for the applied voltage wave to first average zero if you switch at a peak - half a cycle later instead of a whole cycle - minimising the low frequency component of the wave.     ... Phil

mike <ham789@netzero.net>: Feb 15 01:02AM -0800 On 2/14/2015 11:43 PM, Phil Allison wrote:   > Consider that it takes half the time for the applied voltage wave to first average zero if you switch at a peak - half a cycle later instead of a whole cycle - minimising the low frequency component of the wave.   > ... Phil   if you say so. As long as you stay out of saturation, the main component of the primary current is due to the shorted secondary. I think I'll give my SCR the benefit of switching on when there's zero voltage.

whit3rd <whit3rd@gmail.com>: Feb 15 01:53AM -0800 On Sunday, February 15, 2015 at 1:02:31 AM UTC-8, mike wrote:   > primary current is due to the shorted secondary. > I think I'll give my SCR the benefit of switching on when there's zero > voltage.   Not really the best idea; it is then possible that the previous turn-off happened after a half-cycle (+), and if this ON state starts with a half-cycle (+) as well, that's two half-cycles of the same polarity. The likelihood of saturation is very high. Turn-on at peak V is a strategy that minimizes saturation risk.

Phil Allison <pallison49@gmail.com>: Feb 15 03:46AM -0800 mike wrote:     > if you say so.   ** Wot a smug prick you are.     > As long as you stay out of saturation,     ** No chance - you are all wet right now.       > the main component of the > primary current is due to the shorted secondary.   ** The secondary is not shorted.     > I think I'll give my SCR the benefit of switching on when there's zero > voltage.     ** More fool you.     ... Phil

Scotophor <a.j.franzman@verizon.net>: Feb 14 04:24PM -0800 > Well, then give us a cost.   > How much will you spend for what you want? Because, otherwise, yes, we're getting into possibly pointless speculation here as opposed to comparing and contrasting the pros/cons - which is what I think you are preferring. In that regard, cost either can be an issue or not.   > Whether this is business or a hobby for you, other people are trying to give you recommendations without anyone having specified an exact cost (above which you don't want to pay). If you are willing to devote endless dollars, then companies can make you an exact custom order. On the other hand, if you are straight off of the street looking for ideal scrap, then say so.   Thanks, everyone, for the recommendations. Although I didn't ask for recommendations, I have considered them all.   Cost is definitely an issue. This is a hobby project for me but I'm not the only person interested. For small quantities, say 20 pieces or fewer, I might pay up to USD $5 each. The reason I didn't mention a price previously is, once there is a price mentioned, it's very difficult to find someone who will sell for less than that... even if they previously would have sold the same item for 50 cents each, without having a price reference available.   As the cost per piece goes down, I might buy larger quantities, up to several hundred pieces. This would enable me to offer either multiple copies of the project item, or the surplus LEDs beyond my own needs, to others in the hobby community. I believe that it will not be cost-effective to fund a new production run of custom manufactured LEDs for such small numbers. I doubt any manufacturer would bother for less than 10,000 pieces (or the equivalent cost thereof, for any lesser quantity).   I object to your word choice when you wrote, "if you are straight off of the street looking for ideal scrap." That phrase is loaded with negative connotations. I already wrote that I was looking for vintage parts. This should have been enough for you to infer that my quest is not for business purposes.

mogulah@hotmail.com: Feb 14 09:22AM -0800 > proper following distance is one inch per hundred miles per hour. Of > course the doors are reinforced with I beams and sbit so if you get > Tboned you're alright.   Well, really. If car seatbelts are done away with, then school buses might also do away with theirs. Then, you can only imagine the fallout. So there's no chance seatbelts are going away.   > Guards on saws. First of all, a guard on a table saw is the worst > goddam thing ever.   Safety technology has improved for table saws. The saw mechanism can actually sense when it is no longer cutting wood and is about to cut a finger or arm, etc... and it will stop cutting just in time. -- https://www.youtube.com/watch?v=esnQwVZOrUU   > Second of all, if you are so clumsy or infirm that you might fall on > that blade or stupid enough to stick your hand on it, should you > REALLY be doing carpentry ?   Right or wrong, I still don't believe landlord's going to go for that one.   > Even worse are those saws with the electronic brake that stops the blade in microseconds if your hand touches it. Now what happens when someone gets used to one of those and then later has to use a saw without that "feature". That "feature" might make them stupid enough to cut their hand off on a normal saw. What's more, electronics do break down, no question. Otherwise this newsgroup would not be here. So if that little sensor or solenoid stops working and someone cuts their hand off on a saw YOU guaranteed would NOT cut their hand off, guess who gets a bunch of money.   > That's right, the lawyers.   And who said everything is 100% guaranteed? Guards on saws and mowers, etc... at least "look" safe, right? Not only that, at least an honest attempt was made.   > Then you get a structured setlement from a class action > lawsuit, and then sell that settlement to J G Wentworth   Not just them. Your local financial district has plenty of other financial advisors, some better, some worse.   > paid a dime. You just borrowed the interest on it. The > stupidity of all this shitis overwhelming, really. In the only country to put a Man on the moon. Really, the only country to produce an extraterrestrial, albeit for a short time. But hey, even ET eventually went home right ? (never saw it)   > I used to be one of the best TV techs,   Right, but then again, everyone says that about themselves, right?   > and I can tell you that in the nbame of safety there is more > shit in there that stops it from working than makes it   They said that about transmission systems in the auto industry back in the late '60s with pollution controls.   > the credits roll at the end we turn it off. We don't lock all the > kids in a room with fucking Sponge Bob all day. That breeds more > idiots.   I think the logic is that idiots are going to result no matter what's done. I think they lock them up with their smartphones, now. They're video games, cable TVs and computers and who-knows-what-else, all-in-one, now.   > We used to spend time with kids. Kids cannot learn from > other kids, they must learn from adults.   Hopefully, yes.   > And that is the fucvking problem, literally. Fucing makes kids, and the wrong people are fucking.   And even then, the right people may become wrong too, five minutes later.     > I think we need to either start steriliing people or putting them in chastity belts or something. Well thre Norplany might > be workable. God damn, we got seven BILLION people. Tha tis > too much.   FWIW, the Constitution of the United States of America might get in the way of that.   > Our food is from overproduced land and is thus has its > mineral content diluted and that is causing a shitload of diseases. When are we going to learn ?   Normally, you have to care first to learn. You can imagine whether or not that's the case.   > as an example to the young so aybe they get smart. If not, > off with their hand or heads or whatever. Consequenses teach > the best, so without consequenses, what happens ?   Well then, its hit or miss. Usually the problems of the world will resolve themselves if left to their own devices.     > Safety my fucking ass, they make more money is more like it. > just like a motorcycle, if my head hits the ground at 85 > MPH, I would rsather be dead. Done with it.   You mean without a helment on?

John Robertson <spam@flippers.com>: Feb 14 09:48AM -0800 >> just like a motorcycle, if my head hits the ground at 85 >> MPH, I would rsather be dead. Done with it.   > You mean without a helment on?   Darwin still wins.   I wear a helmet and have hit the ground at about 60MPH - scratched (read finished off) the helmet but not my head. Had two wonderful (now adults) children since then.   Helmets can save lives, but if your life isn't worth saving then by all means don't wear one.   As for safety laws - most were put in place because there are a lot of people who don't actually care about protecting the consumer from design faults in products. Consider that roughly 1 in 100 people are sociopaths without the ability to empathize on other peoples pain or injuries - how many of these characters are in positions in companies that make products for folk? These are also the folks that don't carry enough insurance (if any) on their cars, hit & run, T-bone motorcycles, and so on.   So don't give me this anti-safety crap   Regulations are there to protect us from the sociopaths. If you think there are too many regulations then work to get rid of the stupid ones, but not the ones that protect your children from being poisoned by careless food processing companies! And so on...   John :-#)#   -- (Please post followups or tech inquiries to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

jurb6006@gmail.com: Feb 14 10:15AM -0800 OK, the TV tech thing, I as good enough to beat out 154 applicants at Electra Sound, and fixed 8-10 sets a day with no recalls. I also fixed the oes nobody else couls figure out. I had a system for troubleshooting that I found impossibe to teach anyone else.   About seat belts, I as the front seat passenger in a 1976 Pontiac Grand Prix that slammed into one of those big telephone oles, the kind that don't break. The people in the back seat slammed into the front seat with so much force that the front seat was pushed so far forward that I could not reach the door handle to open it. If I had been wearing a seat belt I would be in a wheelchair.   A motorcycle helmet is useless. Only thing it is good for is if someone throws a rock at you. I do agree about having to wear glasses because there can be shit flying around in the air, kicked up by people's tires etc. Of course, plus if you are driving around blinded you create a hazard for others. This is where the line is drawn. And well should be. But the helmet will facilitate you bcoing a vegetable rather than dead. I don't want to sound like I am putting down people who are crippled, but I would just as soon die. Just don't tell them that because I don't want to insult them. If you have problems, my apologies, but facts are facts.   I believe people put too much stock in life. We are all going to die someday so there is no sense in fearing it. There are types of hurt that are worse, look at how much business Kevorkian got. they sactually even sell suicide kits. I guess some ppeople agree, it ain't worth the suffering sometimes.   Now I am not saying to make things purposely unsafe. The thing about the ike sticking out the dashboard of a cvar, well that is a joke, but seat belts and air bags ? Let people's ribs get busted on the steering wheel so that they learn how to fucing drive. Proper following distance is NOT one inch per hundred miles per hour. I also think that if someone changes three lanes within so many feet there should be a device in the car that shocks their genitals. That would do more for traffic safety rather than that which will instill a sense of invulnerability.   Ever read that poem called "You Didn't See Me" about motorcyclists ? Maybe I'll see if I can find it later.   But with all this, what I would do and all that, I wil not ride a motorcycle on the streets. I would ride a dirt bike for fun. I would do alot of stupid shit for fun. But I think it is foolhardy to ride in traffic. People are just too damn dumb out there.   You know, if you can drive, you can drive after a few drinks. You can drive on the cellphone. You can drive and eat.   However, if you can just barely do it under optimal conditions, you should pay 100 % attention to it. People don't know how to back out of a damn parking spot. They don't know the width odf their car and you can't see the front fenders. Alot of them lack the spatial reasoning and could never drive a big truck. Though not licensed to do so, I have driven a big truc and let me tell you it is no trivial matter. What's more, people in cars make it a nightmare. These days, my poor eyesight makes it so I would not even try it. That is called not being stupid. I also won't drive a car under alot of conditions, too bright sun, raining and dark, things like that. I don't even like driving anywhere I haven't been before. I can technically pass the eyue test becaause they are not testing for what is wrong with me. Goes to show you how efficient the government is at saving us fron ourselves.   They fail, and take all the fun out of life. Man, when we were kids we stood up in the back seat and Dad would punch it throwing us violently into the seat. It was fun as hell and we did not get hurt. You couldn't get the smile off my face when these fast cars were accelerating.   Then when I got older I once got a ticket for flying in a car. How many people do you know who can say that ? LOL. But it isn't bullshit. I should have saved the ticket but I am pretty sure they took it when I paid it. Should have made a copy of it for proof. but I was much younger and you could get away with that shit. People were not on cellphones because nobody had them. The cars were like tanks. And people I truly believe were healthier. Their bones did not brea as easily, they qwere just tougher. W eused to get into street fights and barroom brawls. Next morning "Damn I'm sore". Nopw everybody goes to the hospital and tries to find someone to sue.   And let's not even get into the treehouse thihng. Treehouses were where the kids learned some of the things you mentioned. Back in the day, little Johnny falls out of the treehouse and breaks his arm. The adults at that house take him a few blocks down the road to the family doctor and call the Parents because they have to be there for the kid to get it worked on. Sure, the doc can manipultate it and get the bones back in place to get rid of most of the pain, but they have to be there to give permission for anything else, and of course pay the TWENTY BUCKS. OK it was a little more than that, butnot like today. With CAT scans and Xrays and three neurosurgeons, and then three prescriptions, nohgody can afford that. So now there is insurance.   If not for insurance, things would cost less. A CAT scan would be fifty bucks. A car bumper would be fifty bucks. But no, you need to martgage your house to get a CAT scan, and a taillight lens for your car is a $300 piece of plastic.   The market would never bear this shit if not for the socialism of insurance.

jurb6006@gmail.com: Feb 14 10:51AM -0800 >there are too many regulations then work to get rid of the stupid ones, >but not the ones that protect your children from being poisoned by >careless food processing companies! And so on... "   I hear ya Man. Food companies don't give a shit, and what's more they da,mnear get away with what they want because of lobbyists. That is whyt there are so many medical problems, the food is no good. (I am speaking about the US mainly, alot of people in other countries wouldn't touch our shit with a ten foot pole)   So they use a SWAT team to stamps out the sales of raw milk which is nowhere near as dangerous as they make out, but put sugar and hydrogenated oils in foods.   Of am of the ilk who believes that certain businesses should be regulated, otherwise generally libertarian. I think small Mom and Pop businesses should be largely left alone. I think restaurants should be inspected from time to time. the way they do it now with all the code requirements it makes it cost twice as much to build a commercial kitchen, and for nothing. In six months the place could be covered with grease and hav e million cockroaches crawling around. They could have cooked and raw meat together. Ever watch Hell's Kitchen or Kitchen Nightmares ? I didn't notice any inspectors there except the guy on the show. I did not see any "condemned" signs there. So the system does not work.   You know, there are people in this world who are responsible and do want to do what's right. If they own a restaurant they set high standard for clenliness for example. If they build an automobile it will not be unsafe because they are "socially" responsible. They take care to not hurt anyone because it is wrong, not because they wioll get in trouble.   There are fewer and fewer such people it seems. That is why they have to be regulated.   Some, the few, could be just fine in an anarchy. They would not need speed limits because they would look at the road and say "Oh, this is a side street so I'll only go X miles per hour". In fact even today most people do slow down below the speed limit when the roads are slick etc., and then some do not.   I would like to find a shitload of people who are responsible adults who do tae care for the rights and wellbeing of others and we all go to somewhere, take over some land and just be by ourselves and let the idiots all kill each other.

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