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Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Apr 22 08:21AM -0400 On 2020-04-22 00:39, Mike Mocha wrote: > still is. Now I have 635/20 Mbps cable service which is like a 1.2 > million percent increase in speed from the dial up days and a reasonably > cheap Usenet provider that I pay extra for.   Eternal September and aioe have been free for a long time.   Cheers   Phil Hobbs   -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510   http://electrooptical.net http://hobbs-eo.com

"pfjw@aol.com" <peterwieck33@gmail.com>: Apr 22 04:20AM -0700 > Is that telephone number really complicit with this spam? If so, we all should call it and personally let them know how grateful we are.   That number is a Safelite Auto Glass outlet in Texas, I believe. Call it anyway as when a business is forced to change its number due to spammers, they tend to complain. And that could only do some good.

John Robertson <spam@flippers.com>: Apr 21 11:27AM -0700 On 2020/04/18 1:00 a.m., Jeff Urban wrote: >> Indeed, my mistake   > Well thank you very much.   > Looks like your best bet is to just put some silicon (diode) in series with CR107. I would recommend a pot for R127 so you can trim the bias. Forget specs just make it the same as the other channel.   There was a 75R pot added in later amps of the same series with R127 reduced slightly in value. I am considering that.   Any particular silicon diodes?     > And that is 47 volts supply ? That means 23.5 split. I wouldn't even bother with the MJ15023s, it is not worth it. The MJ2955 will handle that application no sweat. Just give it bias. Newark has then for like a buck and a quarter.   I have some MJ2955s in stock.     > Of course check the drove circuitry first. To do that put 100 ohm resistors across the B and E of the outputs. The circuit should stabilise ad actually amplify but DO NOT put a load on it. Once it does that THEN you put the outputs in. Always on a DBY first.   I'll put up the schematic of the model I am looking to upgrade to with my notes...past this model they changed the specs on the other pre-driver germanium transistors which would require a bit more changes to get the bias correct I suspect.   What is a "DBY"? Normally I use a series 40 to 60W lamp with the line when doing test to current limit.     John :-#)#   -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

Fox's Mercantile <jdangus@att.net>: Apr 21 01:50PM -0500 On 4/21/20 1:27 PM, John Robertson wrote: > What is a "DBY"? Normally I use a series 40 to 60W lamp with the line > when doing test to current limit.   Jeff is hard pressed to spell anything. DBY = DBT, Dim Bulb Tester.   -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

whit3rd <whit3rd@gmail.com>: Apr 21 10:43PM -0700 On Tuesday, April 21, 2020 at 11:27:45 AM UTC-7, John Robertson wrote:   > There was a 75R pot added in later amps of the same series with R127 > reduced slightly in value. I am considering that.   > Any particular silicon diodes?   To be careful, diode-test a good Ge transistor and its associated diode, and try to get the same voltage-offset (transistor BE drop minus diode drop). Within 20 mV would be good.   As I read the schematics, the pulldown output drive transistor has an emitter resistor and base-negative pulldown resistor; you might want to change the base pulldown resistor, too, to bias the emitter current the same as the original.

Mike Mocha <mocha@mailexcite.com>: Apr 22 04:39AM On Mon, 20 Apr 2020 08:39:02 -0700, John Robertson wrote:     > Welcome back! Were you trapped on a desert island with only a volleyball > for company?   > John ;-#)#     Worse, I was stuck on ISPs without Usenet. I used to have various dial up accounts until 2002 until reasonably priced DSL came to my area. The difference was that DSL didn't include anything but total garbage Usenet. Of course years later it was totally dropped from all ISPs and still is. Now I have 635/20 Mbps cable service which is like a 1.2 million percent increase in speed from the dial up days and a reasonably cheap Usenet provider that I pay extra for.

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