| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable inverter circuit which operates stably by protecting a booster transformer against an overvoltage when a load state is varied. SOLUTION: Each load is provided with an output current detecting circuit and a timer circuit and when the output current is lower than a set level, the timer circuit operates and a control circuit is driven based on the output signals from the output current detecting circuit and the timer circuit to interrupt the inverter output. When the output current exceeds the set level within a set time, the timer circuit operates to sustain the inverter output. |
