----- Original Message ----- From: "Bob Deuel" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, April 09, 2006 11:52 AM Subject: [AMRadio] Triode connecting 803's for a Modulator
> I have a bunch of 803's. In the past, I have seen modulator articles > featuring triode connected 813's. Physically, the 803 also looks like it > would be a good candidate for the same application. Has anybody tried triode > connecting 803's for a modulator? If so, what were the design parameters did > you used? Tnx, Bob K2GLO On page 662 of the 15th Edition of RADIO HANDBOOK by Editor and Engineers. Paragraph 30-8 the use of 803 in triode connection is fully discussed. A schematic (figure 20) shows 2500 volts at 18000 ohm plate to plate being driven by a 8 watt speech amplifier through a Stancor A-4761 Class B driver transformer set for 2:1 Ratio. Eg-g =170 volts Driving power 7-8 watts Resting current = 50 mA. Power output = 510 watts Supressor volts = 280-340 volts A Chicago CMS-3 was used for the output transformer..
