| 摘要 |
Transformer driving coils 24 and 25 are addled to a DC-DC converter composed of a DC power supply 1, semiconductor switching devices 91 and 92, a transformer 2, rectifiers 81 and 82, a filter capacitor 3, and others, in order to perform a self-oscillating operation. On the other hand, an output-voltage detection and control circuit 6; is used to provide control consisting of both frequency an( pulse-width modulation, thus keeping the output voltage constant without the use of any expensive IC circuits or pulse transformers.
|
