| 摘要 |
In the case of an invertor having two transistors (T1, T2) forming a half bridge and the bases being controlled via feedback, the bases are inadequately driven, especially in the case of a pulsating operating voltage. The base drive is improved in that current pulses (icT5, icT7) are supplied into the transformer (Tr) via an active current source (T5, T7) by means of a secondary winding (SR1, SR2), at the operating frequency of the invertor in each case. Especially for an invertor for supplying an inductive hotplate.
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