On 22 Aug 2006 at 14:12, Jennings wrote:
> I am thinking of a passive grid driven configuration for a GU74B/Tetrode
> Board amp. I could parallel a bunch of 2W carbon resistors to make up 50 ohms
> at 100 watts, but the physical size worries me. Has anyone got an "off the
> shelf" solution and source of supply or suggestions?
Lee, you might try to locate some TO-220 sized power resistors made
by Caddock. They mount on a heatsink, but they are compact and have
low intrinsic inductance. A couple of 100 ohm 50 watt units could be
put in parallel, or two 25 ohm units in series. I've used these
resistors successfully in my 4cx1600b amp. (See "Sunnyvale/St.
Petersburg Kilowatt Plus in the ARRL handbook, 1999-2004.)
73,
George T. Daughters, K6GT
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