In Reply to: Suggestions for drivers and OPT's for 10Y and/or 50 output tubes. posted by Rick R on March 30, 2007 at 12:20:57:
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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Follow Ups
- Re: Suggestions for drivers and OPT's for 10Y and/or 50 output tubes. - Paul Joppa 19:34:17 03/30/07 (0)