Control unit for an a-c control element with full-wave control

Details Control unit for an a-c control element with full-wave control Control unit for an a-c control element with full-wave control

1976-04-08

1977-09-20

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

323 18, 323 24, G05F 144

Patent

active

040500080

ABSTRACT:
A control unit for the full-wave control of an a-c control element. The control unit comprises a push-pull oscillator for generating control pulses for the thyristors of the control element. The oscillator includes a transformer and is followed by rectifiers which are responsive to the output of the transformer. Additionally circuitry is provided for gating the output of the control unit during each first half-wave of a wave packet of the a-c supply voltage and for performing phase gating over several half-waves when the control unit is switched on.

REFERENCES:
patent: 3356784 (1967-12-01), Bertioli et al.
patent: 3363143 (1968-01-01), Cavanaugh
patent: 3365654 (1968-01-01), Johnston

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