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1. [Amps] magnet wire (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 18 Jan 2003 08:46:52 -0800; I've had to purchase wire specific to magnet construction. Some mfgrs have magnet specific wire made in almost a square shape. Mo money, but almost a must have for serious limited physical size appli; /archives//html/Amps/2003-01/msg00151.html (6,720 bytes)
2. Fw: [Amps] Amp Problem Still (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 18 Jan 2003 08:52:47 -0800; Ed, - There is no reason why you have to troubleshoot the path with the amp even plugged in. A good quality multimeter will do the job with the line (mains for you people across the water) plug out.; /archives//html/Amps/2003-01/msg00152.html (7,487 bytes)
3. Fw: [Amps] Penta 8877's (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 18 Jan 2003 08:58:43 -0800; Hi Phil, - I don't think Penta was/is making them, just actual testing of what they bought and reseling them. I've used lots of Penta's never had a bad one. Been using the Penta Labs brand since at l; /archives//html/Amps/2003-01/msg00153.html (6,935 bytes)
4. [Amps] AB1, AB2, Audio and RF amps (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 1 Dec 2002 19:51:21 -0800; Way too much turkey over the holiday... - Hi groovy guys and gals... - Re: AB1, AB2, Audio and Radio Frequency Amplifiers. - For the topic example, know there are two different conventional layouts f; /archives//html/Amps/2002-12/msg00013.html (8,754 bytes)
5. Fw: Re: [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 1 Dec 2002 20:18:26 -0800; - From: BEAR <bearlabs@netzero.net> - coupled drive to - - Beyond expected AB1 operation ... distortion goes up big time. - - In practice, the stage gain is probably more than enough that flat toppin; /archives//html/Amps/2002-12/msg00014.html (10,071 bytes)
6. Fw: Re: [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 1 Dec 2002 19:55:23 -0800; Not always the rule Mark.. cheers skipp - ________________________________________________________________ Sign Up for Juno Platinum Internet Access Today Only $9.95 per month! Visit www.juno.com; /archives//html/Amps/2002-12/msg00015.html (7,973 bytes)
7. Fw: Re: [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 1 Dec 2002 19:58:36 -0800; Your going to have to explain this one for me... skipp - ________________________________________________________________ Sign Up for Juno Platinum Internet Access Today Only $9.95 per month! Visit w; /archives//html/Amps/2002-12/msg00016.html (8,572 bytes)
8. Fw: Re: [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 1 Dec 2002 20:39:05 -0800; From: Rich <2@vc.net> - In his audio amplifier examples, the "grid circuit" is very often a much higher designed input Z. - - If he wrote that, then he is a little off base... like RF amps, there ar; /archives//html/Amps/2002-12/msg00017.html (9,853 bytes)
9. [Amps] various parasitic sources... chassis, tubes, etc... (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Tue, 5 Nov 2002 20:49:43 -0800; Hi John, - Regarding the "no parasitic suppressor" portion of your story below... - I would think the potential for RF amplifier parasitics are from quite the mixed bag of sources. Each chassis layou; /archives//html/Amps/2002-11/msg00048.html (9,009 bytes)
10. Fw: [Amps] Relay contact burnisher (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Thu, 7 Nov 2002 07:16:48 -0800; Hi Eric, - There is/was a line of pro burnishing files, sticks, bars of burnish "soap" and similar products made which have now faded into history. - Your in luck... GC Electronics sells simple relay; /archives//html/Amps/2002-11/msg00090.html (8,071 bytes)
11. Fw: RE: [Amps] 2 x 8877 amp (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Thu, 7 Nov 2002 07:23:44 -0800; Three years ago I received an old immersed RF deck from an Xray unit... had two 3-500z's on board. The individual filament transformers where also in the oil. - Nothing I try completely removes the o; /archives//html/Amps/2002-11/msg00091.html (8,329 bytes)
12. [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 9 Nov 2002 08:40:07 -0800; Bill, - Some high-u tetrodes by function of tube geometry are not best operated with the grid and screen tied together Grounded grid 4-250A & 4-400A tetrodes should actually be operated with proper d; /archives//html/Amps/2002-11/msg00147.html (7,500 bytes)
13. [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sun, 10 Nov 2002 09:07:14 -0800; Hi Jim, - Yep, a lot of 4-250a, 4-400a plug and play has been done through the years. For a new project, I would separate the grids and provide control bias to G1. The series zener in the filament xm; /archives//html/Amps/2002-11/msg00158.html (8,519 bytes)
14. Fw: [Amps] Fw: 4-400A in Grounded Grid (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Mon, 11 Nov 2002 07:43:32 -0800; Your were fortunate, but I doubt every tube of the same family and type would default idle at 60mA. Cutoff bias is made with the neg supply method by simply lifting the "grounding side" of the resist; /archives//html/Amps/2002-11/msg00176.html (8,618 bytes)
15. [Amps] tube data sheets (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Wed, 13 Nov 2002 18:04:36 -0800; http://hereford.ampr.org/cgi-bin/tube?index=1 just a nice place for some tube data online. enjoy skipp ________________________________________________________________ Sign Up for Juno Platinum Inter; /archives//html/Amps/2002-11/msg00220.html (6,398 bytes)
16. [Amps] Re: AB1 v. AB2 (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Sat, 30 Nov 2002 09:42:42 -0800; - - One contribution is the swamping effect for the "feed through" or "feed forward" power from the driving source. - The terms can be misleading, as that portion of the drive power does not appear i; /archives//html/Amps/2002-11/msg00417.html (8,229 bytes)
17. [Amps] Problem with SB-1000 Power Supply (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Wed, 2 Oct 2002 17:20:07 -0700; Had the same problem in a few different models of similar amplifiers. Turns out to be a power supply electrolytic failing after an amount of "on time." Power off and the faulty cap un shorts itself.; /archives//html/Amps/2002-10/msg00012.html (9,564 bytes)
18. [Amps] re: Micor tube Repeater Amplifier Conversions - Modifications (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Wed, 2 Oct 2002 21:02:11 -0700; Hi Paul, - - Yes, but the ones who know much of anything don't work cheap. It would be worth your while to search the amps archives and consult some ARRL & Radio Handbooks for the information you see; /archives//html/Amps/2002-10/msg00014.html (9,161 bytes)
19. [Amps] DC On tube filaments (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Wed, 9 Oct 2002 21:03:08 -0700; re: dc filaments - In some boutique ultra high stage gain audio amplifiers made for guitar players, dc is pretty much a requirement. Else the circuit would just plain not work. I have built polarity; /archives//html/Amps/2002-10/msg00091.html (8,504 bytes)
20. [Amps] proper label (score: 1): Author: nospam4me@juno.com (skipp isaham); Date: Thu, 24 Oct 2002 17:38:00 -0700; Hello there, - Here's the 50 cent question for the week. First the circuit description. - A tetrode in grounded grid service needs an operational label. Said tetrode has the screen grid (directly str; /archives//html/Amps/2002-10/msg00253.html (7,248 bytes)

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