Single-ended push-pull induction heating apparatus

Details Single-ended push-pull induction heating apparatus Single-ended push-pull induction heating apparatus

1982-11-05

1985-12-24

Albritton, C. L.

Electric heating

Metal heating

Of cylinders

363 97, H05B 102, H05B 606, H05B 664

Patent

active

045608512

ABSTRACT:
An induction heating apparatus comprises an SEPP inverter including two transistors (Q1, Q2) connected in series, one transistor (Q1) being connected to a high electric potential end of a direct current power source (DB1) and the other transistor (Q2) being connected to a low electric potential end. A series circuit of a induction heating coil (L1) and a resonance capacitor (C1) is connected in parallel with one transistor (Q1) and freewheel diodes (D1, D2) are connected in anti-parallel with two transistors (Q1, Q2), respectively. A controlling circuit (71) turns one transistor (Q1) on/off in a predetermined cycle and a controlling circuit (72) turns the other transistor (Q2) on in an arbitrary time period in an off interval of one transistor (Q1) so that an input current to the series circuit is controlled.

REFERENCES:
patent: 4085300 (1978-04-01), MacKenzie et al.
patent: 4150426 (1979-04-01), Jansson
patent: 4316243 (1982-02-01), Archer
patent: 4342076 (1982-07-01), Rosswurm et al.
IEEE Standard Dictionary of Electrical and Electronics Terms, 1977, p. 646, (definition of single-ended push-pull amplifier circuit).

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