Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+blocking\s+cap\s+current\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+blocking\s+cap\s+current\s*$/: 18 ]

Total 18 documents matching your query.

1. [AMPS] blocking cap current (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 19 Jul 1999 16:09:01 -0400; Rich had the right basic idea, but he neglected the fundamental current flowing through the capacitor that transfers energy to the tank. Since his method also ignores harmonics and phase shift, I'm n; /archives//html/Amps/1999-07/msg00365.html (9,049 bytes)
2. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 20 Jul 1999 09:21:07 +0100; That turns out to be frighteningly high on 10 metres - take say 3000v pk and 20pF, that's over 10 amps peak. I must admit that I've never actually thought about that. As far as phase shift at the fun; /archives//html/Amps/1999-07/msg00367.html (9,415 bytes)
3. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 20 Jul 1999 03:11:37 -0700; ? It apparently doesn't seem to make a discernable difference if the tank caps are adjustable. . ? Agreed. Anyone who doubts this should take a look at the anode waveform with a 1000 to 1 HV multipl; /archives//html/Amps/1999-07/msg00370.html (10,695 bytes)
4. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 20 Jul 1999 12:55:43 +0100; the I only said 'might'...............I agree it doesn't make appear to make any discernable difference. It used to, of course, in days of plate and screen modulation on AM, when you wanted a small v; /archives//html/Amps/1999-07/msg00372.html (9,682 bytes)
5. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 20 Jul 1999 09:23:04 -0700; ......... ? Yes. Eimac makes a grid collet grounding device that has minimal L. ? Kenwood, Heath and Drake used three, paralleled 500v mica capacitors that were not current rated. It worked ok. ? Co; /archives//html/Amps/1999-07/msg00376.html (9,419 bytes)
6. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 20 Jul 1999 17:32:27 +0100; Too right, Rich. SSB lets you get away with a lot of sins - like electrolytics with low ripple current ratings, transformers without much iron and current densities of 2000 amps/sq inch and more, pa; /archives//html/Amps/1999-07/msg00377.html (8,726 bytes)
7. [AMPS] blocking cap current (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 20 Jul 1999 19:26:57 -0400; Peter sez: The phase shift could be an issue on ten meters, where series L and shunt C forms a delay line. It might then be advisable to add a slight safety factor to the estimated current. Say funda; /archives//html/Amps/1999-07/msg00382.html (11,067 bytes)
8. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 20 Jul 1999 18:01:38 -0700; ? How could it with a typical L of 200 or so nH and 5 to 10 pF? ? ¿absolute power? ? How could power have anything to do with it? An amplifier can be tuned up at half power for an identical s; /archives//html/Amps/1999-07/msg00385.html (12,882 bytes)
9. [AMPS] blocking cap current (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 21 Jul 1999 05:25:22 -0400; If you have 1500 watts leaving the tank to the load, you MUST have 1500 watts or MORE entering the tank. If the anode swing is 3000 volts RMS, you MUST have at least one half ampere ampere of RMS cu; /archives//html/Amps/1999-07/msg00388.html (11,685 bytes)
10. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 21 Jul 1999 11:41:30 +0100; Is this strictly correct, since we can see that a major part of the current through the blocking cap at the higher frequencies is caused by the current through the plate - ground capacity? 73 Peter G; /archives//html/Amps/1999-07/msg00389.html (8,836 bytes)
11. [AMPS] blocking cap current (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 21 Jul 1999 09:54:47 -0400; Let's look at only 14pF total capacitance at the anode side of the blocking cap, 3000 ohms load resistance at the anode end of the tank, and 3000 volts RMS. Doing it the incorrect way Rich suggested; /archives//html/Amps/1999-07/msg00391.html (10,492 bytes)
12. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 21 Jul 1999 15:30:14 +0100; Which suggests that TV doorknobs are not a good choice for the blocking cap, especially on 10 metres. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.; /archives//html/Amps/1999-07/msg00392.html (8,794 bytes)
13. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 21 Jul 1999 08:47:39 -0700; ? "absolute power corrupts absolutely". .- Lord Acton. ? And with the amplifier tuned for max with half drive and 750w out, the grid current would be roughly the same, the anode swing would still be; /archives//html/Amps/1999-07/msg00393.html (13,128 bytes)
14. [AMPS] blocking cap current (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Wed, 21 Jul 1999 16:59:41 +0100; Being picky, what is a 'half-cycle pulse of DC current'? Wherefor the current squared? ( DC is Direct Current, so DC Current is Direct Current Current, or Current squared) The term is nearly as bad a; /archives//html/Amps/1999-07/msg00394.html (8,931 bytes)
15. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 21 Jul 1999 10:03:34 -0700; ? ... the roughly half-cycle when anode current is not cut off. ? Strictly DC, no, however anode conduction takes place on one polarity rather than two. dominant factor. ? At 29.7 MHz, this seems qu; /archives//html/Amps/1999-07/msg00395.html (9,031 bytes)
16. [AMPS] blocking cap current (score: 1): Author: johnf@futurenet.co.za (John Fielding); Date: Wed, 21 Jul 1999 20:12:34 +0200; -- <Peter_Chadwick@mitel.com> To: <amps@contesting.com> "Now you see me, now you don't " Lord Lucan John ZS5JF -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Ad; /archives//html/Amps/1999-07/msg00396.html (8,836 bytes)
17. [AMPS] blocking cap current (score: 1): Author: johnf@futurenet.co.za (John Fielding); Date: Wed, 21 Jul 1999 20:13:45 +0200; You just lost me! John ZS5JF -- To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Pr; /archives//html/Amps/1999-07/msg00397.html (9,625 bytes)
18. [AMPS] blocking cap current (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 21 Jul 1999 23:28:08 -0700; ? agreed, Tom. Can you explain how the half cycle pulses of anode-current, supplied through the HV-RFC from the HV supply, are able to pass through the DC blocking capacitor? ? This is not the answe; /archives//html/Amps/1999-07/msg00402.html (9,148 bytes)

Current List: 1 - 18
Page: [1]