Tube Voltage Rating Question


If a tube comes in 2 versions one with a 6 volt heater and one with a 2 volt heater where everything else is the same what would happen if the tube with the lower heater voltage rating is used in a preamp designed for the 6 volt version?
ruben1

Showing 1 response by marakanetz

Filament touches cathode and the tube is short and ready to show some fireworks with fried PCB, wires, caps.