| 摘要 |
PCT No. PCT/DE93/00169 Sec. 371 Date Sep. 27, 1994 Sec. 102(e) Date Sep. 27, 1994 PCT Filed Feb. 17, 1993 PCT Pub. No. WO93/21679 PCT Pub. Date Oct. 28, 1993An electronic switched-mode power supply for supplying current to an accumulator and to an electrical load adapted to be switched on, includes a self-oscillating flyback converter having a transformer, a switching transistor with an emitter resistor, a feedback circuit, and a control circuit influenced by the accumulator voltage. The power supply further includes an interrupting device which turns the switching transistor off for a prolonged period when, with the switched-mode power supply in the pulsating mode, the ratio of oscillation off-time to the duration of oscillation bursts exceeds a predetermined magnitude.
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