Power control system for single phase induction melting or heati

Details Power control system for single phase induction melting or heati Power control system for single phase induction melting or heati

1975-08-04

1977-07-19

Envall, Jr., R. N.

H05B 102, H05B 504

Patent

active

040370445

ABSTRACT:
There is disclosed herein a circuit for controlling the voltage and power delivered to a single phase induction melting or heating furnace wherein the impedance of the furnace varies. The circuit utilizes diode rectifier means and controlled rectifier means connected in series with capacitance and achieves transient-free and harmonic-free power control.

REFERENCES:
patent: 3500174 (1970-03-01), Ellerbeck
patent: 3648151 (1972-03-01), Gurwicz
patent: 3764890 (1973-10-01), Caen
patent: 3821456 (1974-06-01), Havas

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