| 摘要 |
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. |
