Home › Forums › Design and Building › Effects Design and Construction › TAN Two-Stroke PT rating? › Re: Re: TAN Two-Stroke PT rating?

April 20, 2011 at 11:12 am #5437
Robin
Participant

Just to be clear, the heater circuit for the audio tubes requires 6.3v, the rectifier tube needs 5v for it’s heater circuit. No center tap is required for the 5v rectifier circuit but the 6.3v circuit needs a center tap, an artificial one if the PT does not include a center tap. Just as you use a twisted pair of wires to control hum, the center tap also works to control hum in the heater circuit.