This is an assembled board of delay circuit that is designed for tube amplifier high voltage section. The circuit works by providing a delay during power on. The delay time is adjustable from 0 to 3 minutes. When power is off the energy will be discharged via a resistor on the board. The relay has rating of 250VAC, 1.2A.
Supply voltage : 15VAC( or DC).
Board Dimension : 64mm x 34mm
