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The transmitter can work without a separate rectifier. I recall a circuit
from the 30's in which the transmitter tube is used also as the rectifier. I think it was in the RCA handbook. I sort of recall an 813 tube, but that may have been a bit early for the 813. Even in those days, it was not "state of the art". Now, I will have to look for the circuit, but the oscillator tube can also serve as the rectifier. It complicates things a bit and is not in any of the Handbooks. Never have seen a 6L6 circuit configured that way, but it can be done and was done in the 30's in at least one circuit. Colin K7FM --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.783 / Virus Database: 529 - Release Date: 10/25/04 |
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