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101. [AMPS] G2DAF (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 15 Jul 1999 16:17:50 -0700; To: <amps@contesting.com> amplifiers a of the ? ¿? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@co; /archives//html/Amps/1999-07/msg00311.html (8,911 bytes)
102. [AMPS] G2DAF (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 15 Jul 1999 20:28:58 -0700; ? With half of the total P being dissipated in the generator, and half of the power being delivered to the load R, the efficiency is obviously 50%. ? Say what? ? ¿? ? I agree that large stati; /archives//html/Amps/1999-07/msg00318.html (13,393 bytes)
103. [AMPS] G2DAF (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 16 Jul 1999 09:03:59 -0700; ? In a debate, not reading before replying is a mistake. - Cheers, Tom. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submis; /archives//html/Amps/1999-07/msg00325.html (8,171 bytes)
104. [AMPS] Class AB1 Grounded Grid? (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 16 Jul 1999 10:30:35 -0700; ? If the grid is not allowed to draw current in cathode-driven configuration, my guess is that the power gain will be around 4. However, driving the grid can produce a power gain of 25 or so with 6k; /archives//html/Amps/1999-07/msg00327.html (7,536 bytes)
105. [AMPS] Power Transfer (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 16 Jul 1999 10:30:39 -0700; ? To get a handle on this, one has to look at instantaneous values of e, i, and p. For example a 3-500z typically runs quite linearly at 1.2 peak amperes of anode current, so the peak world is a who; /archives//html/Amps/1999-07/msg00328.html (7,603 bytes)
106. [AMPS] Class AB1 Grounded Grid? (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 17 Jul 1999 08:09:59 -0700; ? Tom: More pos. screen volts means more ZSAC - which must be countered with more neg. grid bias. Unless there is a tangible benefit, 'tis an exercise in futility. ? In order to realize max. gain fr; /archives//html/Amps/1999-07/msg00334.html (8,534 bytes)
107. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 17 Jul 1999 08:59:55 -0700; this but if it ? For c. five years, the ARRL Handbook had the wrong Pi-L tank values - - despite being repeatedly told about the problem. . For instance, ever since 1995, the Handbook has had an inac; /archives//html/Amps/1999-07/msg00335.html (8,942 bytes)
108. [AMPS] RE: 4cx10000 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 17 Jul 1999 08:59:57 -0700; ? Heavier loading prevents the instanteous anode potential from decending into the region where distortion is maximal. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WW; /archives//html/Amps/1999-07/msg00336.html (8,127 bytes)
109. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 17 Jul 1999 16:44:22 -0700; ? The error was in C2, Eventually it was fixed. ? Calculate the difference between instantaneous anode potential at max. conduction and anode supply potential. Divide by 2^0.5 to convert peak v to R; /archives//html/Amps/1999-07/msg00341.html (9,550 bytes)
110. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 17 Jul 1999 16:44:24 -0700; ? As I understand it, there was no error in the formulae, Ian. ....... Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submiss; /archives//html/Amps/1999-07/msg00342.html (9,603 bytes)
111. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 18 Jul 1999 00:45:31 -0700; ? indeed. . . and the missing something is assumption. ? Let's not. To accurately calculate peak and RMS anode-potential, it is a mistake to assume that all tube types have the same minimum anode po; /archives//html/Amps/1999-07/msg00346.html (10,374 bytes)
112. [AMPS] 10m operation in TL922A (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 18 Jul 1999 00:45:29 -0700; see my Web site, Harry Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative request; /archives//html/Amps/1999-07/msg00347.html (6,880 bytes)
113. [AMPS] Re: ARRL Pi net formulae (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 18 Jul 1999 18:51:20 -0700; ? As I recall, the Pi-L tank values for C2 originally did not include the C of the L-section. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.; /archives//html/Amps/1999-07/msg00352.html (7,825 bytes)
114. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 18 Jul 1999 19:58:09 -0700; ? no surprise, Tom. ? Amperes equals volts divided by ohms needs to be corrected? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.h; /archives//html/Amps/1999-07/msg00353.html (8,999 bytes)
115. [AMPS] 4-400A On AB1 (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 19 Jul 1999 00:57:05 -0700; ? Only if you want to drive the 4-400A in Class AB1. To: <amps@contesting.com> Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html; /archives//html/Amps/1999-07/msg00356.html (10,197 bytes)
116. [AMPS] Impedance of amplifiers (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 19 Jul 1999 09:22:46 -0700; ? My solution is not a formula, Tom. . . Hello. ? [chortle] - later, Tom. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Subm; /archives//html/Amps/1999-07/msg00363.html (8,583 bytes)
117. [AMPS] 6146/TS830S HIGH POWER MOD (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 20 Jul 1999 02:22:47 -0700; ? I have heard of no instability probs with the ''high power mod''. However, the max. rated screen potential for a 6146B is 250v. A stock TS-830s operates the screens at c. 260v max. on SSB and slig; /archives//html/Amps/1999-07/msg00369.html (7,635 bytes)
118. [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)
119. [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)
120. [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)

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