On Thu, 29 Jul 1999 08:32:43 -0400 "Tom Rauch" <[email protected]> writes: On Thu, 29 Jul 1999 07:30:04 -0700 Rich Measures <[email protected]> writes: Good Morning (at least here in California) Pete
Assuming, of course, that the transmitter in question is sufficiently linear at the power level in question to accurately reproduce the two-tone waveform. 73, Marv WC6W * ____________________________
voltage in tube a is with SSB. Hi Peter, If you were thinking of National AN-8, that example was probably somewhere around the 25 watt level. I suppose that was an early "Class H" amplifier... though
have, xfmr Hi Larry, Wellllll, if you wanted to invest more time and effort on the power supply than the amplifier, you could build a switcher. A "gravitational constant" of 100 watts per pound is ea
Collins values, Hi Monty, The 30S-1 metered the heater voltage on the primary side of the transformer. Likely Collins calibrated the meter by measuring the resulting filament voltage at the pins... T
Happy Monday everyone! I suppose I should clarify just a bit what I meant by the .1 uF output capacitor... WARNING... most of the items in the following discussion are NOT isolated from the AC line!
limit when the it Hi Peter, I think I sent you the overall description of my 4CX1500B rediculotron some time back. But just to elaborate a bit on that design, I have a floating grid supply (sourced f
This do comes loop of loop There are actually two loops. The first loop is around the PFC and that has a rather low frequency response... on the order of 10 Hz. This provides approximately 5% regulat
On Tue, 15 Jun 99 10:34:15 MDT "dhaupt" <[email protected]> writes: Hi Dave, How much power are you looking to run? A single transformer should suffice for up to 3KW. If you need more, I thin
On Tue, 15 Jun 1999 22:09:24 +0200 "Carsten Groen" <[email protected]> writes: Hi Carsten, I haven't seen that QEX article... Just curious... which controller chip and Power FET's does it use? at what
Good Morning everyone, I'm trying to reconcile some design issues with an unusual 4-400 amplifier I've been kicking around the past couple weeks. Does anyone: 1. Have a feeling for what the value of
Happy Friday everybody, My last curious concept of the week. A mix of the old and the new. Just for old times sake, say I had a vintage tetrode, 4-400A to be specific, and I wanted to operate it in s
On Thu, 24 Jun 1999 13:54:01 -0700 Rich Measures <[email protected]> writes: Hi Rich, I was planning to mount the cap vertically in an 8" hi case and motor drive it, so I wasn't concerned with a shaft
Jon & the group, The breakdown potential of a gaseous dielectric (air included) is directly proportional to the gas pressure EXCEPT at high (>100 PSI) and very low pressures (approaching tube or vacu
Hi all, I just thought I'd share an idea from my own homebrew amplifier experience along this line. In my own amp and separate power supply which is built in the bottom of a rack cabinet I have plast
Happy Sunday Morning (at least where I am...) Does anyone happen to know the specifications for either the TRW PT6702 or PT6747 RF power transistors? I surmise that they are late 60's vintage VHF par
"High I Hi Roy, Since that HR article DOESN'T tell the full story... neither PIN diode part numbers nor the control circuitry nor any details on the RFC's... I wonder if you could fill in some of th
QST 3-500Z, I sent this URL direct to Warren and then I noted that VIc and perhaps some others would also be interested. You can download a copy of the 3-500Z data sheet in PDF format at: http://cata
diss. Hi Scott, I've always thought that they were kinda cute myself... ever since I inherited a couple of them (actually the 4CX600JA's with the larger radiator) but, they do have there own peculiar
commercial If I was building a new amplifier, which I kinda am tinkering with... I'd take a long hard look at transistors...which is what I'm doing. That leads to a whole different set of challenges