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Re: Suggestions for drivers and OPT's for 10Y and/or 50 output tubes.

The 50 requires a grid resistance of no more than 10K ohms, which is easily met with an interstage transformer or a grid choke. Using RC coupling is a challenge, since driving the 10K resistor to 84 volts peak (maximum conditions) takes nearly 1/2 watt even staying entirely in class A1. Allow some margin in the driver, and it's a 1-2 watt amplifier on its own.

The 10 is very different, three type 10s in parallel would be similar to a single type 50. (I have not seen the 10Y rated for anything but RF use.)

(replaced with edited version 7:30PM - class A1, 1-2 watts)


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  • Re: Suggestions for drivers and OPT's for 10Y and/or 50 output tubes. - Paul Joppa 19:34:17 03/30/07 (0)

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