| Tilbury <TilburyDave@aol.com>: Nov 02 06:56PM -0600 Based upon what Fox's Mercantile said... >> o SUGGESTION: SAVE THIS POST (IT CONTAINS VALUABLE SOURCES!) > No, it contains your usual useless going on and on and on > about something most people don't give a fuck about. Why don't you shut the fuck up! |
| Fox's Mercantile <jdangus@att.net>: Nov 03 07:09AM -0600 On 11/2/19 7:56 PM, Tilbury wrote: > Why don't you shut the fuck up! Oh that's just precious. Is that the best you can come up with? Did you have to masturbate after sending it? -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
| Jon I <joniv45@home.net>: Nov 02 03:48PM -0400 Since my dual 2N3055 driven flyback power supply was accidentally thrown away, I was pondering building another until coming across subject mentioned assemblies. They're on eBay and elsewhere. Looks like various drivers with flybacks. Example: https://tinyurl.com/y4lzxt85 Questions would be: 1) Do these have built in diodes? I DO want to be able to drive a HV multiplier. 2) Performance/ versatility/ durability comments? Any specific recommendations of one over the other, etc? Most seem to fall within the $15-$20 US range. The 3055's with flyback and tripler could output 30-40 KVDC with mA's available. Could one of the prebuilt Chinese units do the same? Might be cheaper to buy than to build another from scratch so your thoughts/ experiences appreciated. Thank you, Jon |
| Winfield Hill <winfieldhill@yahoo.com>: Nov 02 05:27PM -0700 Jon I wrote... > Since my dual 2N3055 driven flyback power supply was > accidentally thrown away, I was pondering building > another until coming across subject mentioned assemblies. Haha, 2n3055, you're talking 45 years ago!! For the last 35 years, we use MOSFETs. > flybacks. Example: https://tinyurl.com/y4lzxt85 Questions ... > Might be cheaper to buy than to build another from scratch > so your thoughts/ experiences appreciated. It's a shame they never provide schematics or similar information. You do get a nice set of parts, and can reverse engineer to get the schematic, and then start making changes. -- Thanks, - Win |
| jlarkin@highlandsniptechnology.com: Nov 02 09:51AM -0700 On Sat, 2 Nov 2019 12:16:41 -0400, Jim Horton <jhorton@nospam.net> wrote: >The main drawback with the device is having to use the wet filters and >it takes them a good twelve hours to dry and that's under a ceiling fan. > Don't want to trade filtered air for mold! It would be as effective to get a small fan and gently waft the smoke away. Most of it will stick to room surfaces or diffuse away, and never be inhaled. This is a great thing to have around: https://www.amazon.com/gp/product/B00080G0BK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 We were using one yesterday to experiment with a 250 watt class-D amp, to measure heat sink temp vs air flow. With these, too: https://www.amazon.com/gp/product/B07FVRR6SD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B018QHQSB8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B01NBM7SBK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B000H151ME/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B001R300WM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Amazon rocks. -- John Larkin Highland Technology, Inc lunatic fringe electronics |
| Jim Horton <jhorton@nospam.net>: Nov 02 01:39PM -0400 > https://www.amazon.com/gp/product/B07FVRR6SD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 > https://www.amazon.com/gp/product/B018QHQSB8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 > https://www.amazon.com/gp/product/B01NBM7SBK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Really neat, thanks for the share. One time, I built a digital anemometer using a PC fan and DVM. I don't think I ever used it other than to verify my car's speedometer at the time. Looks like someone's been checking out my prior thread on thermocouples. The thermometer that can use multiple thermocouples is very tempting. > https://www.amazon.com/gp/product/B000H151ME/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 > https://www.amazon.com/gp/product/B001R300WM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Nice inclusions, but can't have. I stopped eating refined/ processed sugars over two years back. Took me from a moderately pre-diabetic to practically nonexistent just by making that change. > Amazon rocks. They're at the top of their game now, but one wonders how long it will last |
| jlarkin@highlandsniptechnology.com: Nov 02 11:05AM -0700 On Sat, 2 Nov 2019 13:39:36 -0400, Jim Horton <jhorton@nospam.net> wrote: >that can use multiple thermocouples is very tempting. >> https://www.amazon.com/gp/product/B000H151ME/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 >> https://www.amazon.com/gp/product/B001R300WM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Air flow meters are great. Air is peverse stuff that defies expectations. Often the air is flowing in exactly the obvious direction, like downward into the hub of a fan blowing up into a card cage. >Nice inclusions, but can't have. I stopped eating refined/ processed >sugars over two years back. Took me from a moderately pre-diabetic to >practically nonexistent just by making that change. I figure that sugar is sugar. It usually comes from sugar cane and removing some molasses and recrystalizing a couple of times doesn't change the chemistry. Corn syrup is evil, unless you are making the occasional pecan pie. -- John Larkin Highland Technology, Inc lunatic fringe electronics |
| jlarkin@highlandsniptechnology.com: Nov 02 11:14AM -0700 On Sat, 02 Nov 2019 11:05:43 -0700, jlarkin@highlandsniptechnology.com wrote: >>> https://www.amazon.com/gp/product/B001R300WM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 >Air flow meters are great. Air is peverse stuff that defies >expectations. Often the air is flowing in exactly the obvious ^ non -- John Larkin Highland Technology, Inc lunatic fringe electronics |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 8 updates in 3 topics"
Post a Comment