[Amps] 3-500Z heater voltage reduction

[Phil Clements]

> Or some other common junk drawer stuff that would do the trick ... the
> last thing i tried was a .27Ohm 10W cement resistor and that was too high
> of a resistance ( was a bit surprised but oh well i dont know the internal
> resistance if the filaments anyways)
> KC7NOA ... i think i even have some nichrome sitting round some where.....
> 

Put the resistor in the primary of the filament transformer. This gives you
a free step-start; the in-rush current will be reduced. Get a 25 ohm 50 watt
resistor with a slider to adjust the voltage. You want to set 5 volts at
each tube pin. Not the socket, but the pin where it protrudes out the bottom
of the socket.

(((73)))
Phil, K5PC