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Total 75 documents matching your query.

1. Re: [Amps] PARALLEL CAPS IN OUTPUT (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Wed, 04 Dec 2013 10:40:12 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: Capacitors don't arc at the RMS voltage. They arc at the peak of the RF cycle. For 1500 watts into 50 ohms, the peak is about 387 VAC. And that's with a 1:1
/archives//html/Amps/2013-12/msg00027.html (8,179 bytes)

2. Re: [Amps] Fw: PARALLEL CAPS IN OUTPUT (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Wed, 04 Dec 2013 12:01:36 -0800
ORIGINAL MESSAGE: (may be snipped) of the Smith Chart', McGraw-Hill 1969, page 6, Fig 1.3, the maximum voltage appearing on a lossless transmission line with an SWR of infinity is twice the voltage w
/archives//html/Amps/2013-12/msg00033.html (8,850 bytes)

3. Re: [Amps] PARALLEL CAPS IN OUTPUT (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Wed, 04 Dec 2013 12:01:40 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: Nobody? I invite you to look inside my amp or most any amp that uses a vacuum variable as the load cap. And mine has never arced despite the occasional wrong
/archives//html/Amps/2013-12/msg00034.html (8,495 bytes)

4. Re: [Amps] PARALLEL CAPS IN OUTPUT (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Wed, 04 Dec 2013 15:33:14 -0800
ORIGINAL MESSAGE: (may be snipped) VR and is the same voltage - necessarily - the two voltages add to give a reflected voltage of 2Vf. To get more requires energy to be made. Vf is the rms volts that
/archives//html/Amps/2013-12/msg00041.html (8,697 bytes)

5. Re: [Amps] SSPA & Heatsink Compounds (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Wed, 11 Dec 2013 08:38:33 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: You want a layer anywhere heat is to be transferred. In other words, yes. 73, Bill W6WRT _______________________________________________ Amps mailing list Am
/archives//html/Amps/2013-12/msg00078.html (6,841 bytes)

6. Re: [Amps] SSPA & Heatsink Compounds (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Thu, 12 Dec 2013 12:27:18 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: Excellent idea. Will definitely use it. Thanks!! 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://
/archives//html/Amps/2013-12/msg00103.html (9,586 bytes)

7. Re: [Amps] SSPA & Heatsink Compounds (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Fri, 13 Dec 2013 12:26:29 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: Communication Concepts has a copper spreader for $49.95 plus shipping: http://www.communication-concepts.com/index.php/heat-sinks.html I recently bought one,
/archives//html/Amps/2013-12/msg00109.html (8,865 bytes)

8. Re: [Amps] Amps Digest, Vol 132, Issue 23 (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Thu, 19 Dec 2013 13:19:30 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: Beware of the Wireman. Twice they screwed up my address and as a result my package drifted around the country for a MONTH and they made no attempt to contact
/archives//html/Amps/2013-12/msg00141.html (7,788 bytes)

9. Re: [Amps] Runaway Plate Current (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Sun, 29 Dec 2013 13:05:33 -0800
IMO, putting a tetrode into standby by removing screen voltage is bad design for the reason the original poster mentioned. Depending on the tube, even zero screen voltage may not put it all they way
/archives//html/Amps/2013-12/msg00170.html (7,587 bytes)

10. Re: [Amps]  Runaway Plate Current (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Mon, 30 Dec 2013 12:52:59 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: A large cathode resistor reduces the gain considerably compared to no resistor, and especially so if it is not bypassed, which it should not be. With all oth
/archives//html/Amps/2013-12/msg00195.html (7,289 bytes)

11. Re: [Amps] Meters again... (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Mon, 30 Dec 2013 13:06:49 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: I agree - outstanding program. It is supplied on the CD included with recent copies of the ARRL handbook. 73, Bill W6WRT ____________________________________
/archives//html/Amps/2013-12/msg00196.html (7,286 bytes)

12. Re: [Amps]  negative screen current (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Mon, 30 Dec 2013 16:34:19 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: I don't believe that is correct. Any electrons flowing INTO the screen will show as positive current, whether from the cathode or anode. Only electrons emitt
/archives//html/Amps/2013-12/msg00204.html (8,645 bytes)

13. Re: [Amps]  negative screen current (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Mon, 30 Dec 2013 16:44:38 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: I believe you have confused electrons with persons who believe in Conventional Current. REAL electrons always know which way to go. :-) 73, Bill W6WRT ______
/archives//html/Amps/2013-12/msg00206.html (8,770 bytes)

14. Re: [Amps] Fake and Counterfeit Chinese Transistors 2SC3133 (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Tue, 31 Dec 2013 12:13:57 -0800
ORIGINAL MESSAGE: (may be snipped) REPLY: I presume you are referring to the rooster crowing in the background? :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Am
/archives//html/Amps/2013-12/msg00243.html (9,199 bytes)

15. Re: [Amps] Russian HV Supply Capacitors (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Thu, 09 Jan 2014 13:42:08 -0800
ORIGINAL MESSAGE: (may be snipped) ORIGINAL MESSAGE: (may be snipped) REPLY: REPLY: Two comments: 1. I have never used those personally, but I am a big fan of Russian stuff. Built very conservatively
/archives//html/Amps/2014-01/msg00040.html (7,589 bytes)

16. Re: [Amps] Building an Amp 101 (score: 1)
Author: Bill <dezrat1242@wildblue.net>
Date: Fri, 17 Jan 2014 08:46:02 -0800
On 01/17/2014 07:10 AM, Jerry wrote: How does one break into this with limited workbench space other than an electronic workbench? I don't want to rain on your parade, but let's be realistic. You can
/archives//html/Amps/2014-01/msg00099.html (9,394 bytes)

17. Re: [Amps] Building an Amp 101 (score: 1)
Author: Bill <dezrat1242@wildblue.net>
Date: Fri, 17 Jan 2014 08:58:08 -0800
<http://www.qsl.net/k2vco/4CX1000A/K2VCO%204CX1000A%20Amplifier.html> The only power tools I used were a drill press and a hand-held jigsaw (a reciprocating sander can be used to make scratched up pa
/archives//html/Amps/2014-01/msg00101.html (9,476 bytes)

18. Re: [Amps] Building an Amp 101 (score: 1)
Author: Bill <dezrat1242@wildblue.net>
Date: Fri, 17 Jan 2014 15:54:25 -0800
On 01/17/2014 09:51 AM, Mike Waters wrote: The output loading capacitor only has to handle about 300 volts. Not so. Capacitors arc at the peak voltage, not the RMS, and with 1500 watts into 1:1 SWR a
/archives//html/Amps/2014-01/msg00117.html (8,652 bytes)

19. Re: [Amps] Building an Amp 101 (score: 1)
Author: Bill <dezrat1242@wildblue.net>
Date: Fri, 17 Jan 2014 15:59:22 -0800
Good point, Colin. Couldn't agree more. 73, Bill W6WRT On 01/17/2014 02:10 PM, Colin Lamb wrote: One area where home built amplifiers can be substantially better than commercial ones is ease of repai
/archives//html/Amps/2014-01/msg00118.html (8,678 bytes)

20. Re: [Amps] Building an Amp 101 (score: 1)
Author: Bill Turner <dezrat1242@wildblue.net>
Date: Sat, 18 Jan 2014 03:52:08 -0800
It might handle the current but the spacing is too small for a proper voltage rating. It should be about four inches in diameter and if bought new should cost between $300-$400. Check out these: http
/archives//html/Amps/2014-01/msg00123.html (9,098 bytes)

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