80kW resistance to salt bath furnace controlled circuit. Salt bath resistance furnace is a big power device, the circuit using fast start, temperature-controlled technology, ca
n greatly save energy. From single-junction transistor VTi etc. relaxation oscillator, adjust the potentiometer RPz manual, automatic time adjustment potentiometer RPi, can be changed thyristor V3, V4 conduction angle, that change Vi, vz conduction angle.