• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

5687 filament heater question

What is the proper pin 4,5,9, connections to run a 5687 at 6.2 volts?

My PT has a 6.2 Vac center tapped filament supply and plenty amps.

Is it, pin 4 & 5 shorted on one leg and pin 9 on the other?.etc

I just want to power up this experiment, I don't need regulation, or 12 V DC recitified now.


P.S. I should know this...so shoot me.