| 摘要 |
PROBLEM TO BE SOLVED: To make a device small-sized and light-weight furthermore by converting a high AC voltage to a DC or AC low voltage without using a transformer and suppressing heat generation in a resistance burden with a prescribed voltage portion out of the output voltage of an AC power source at the time of not using a transformer to preferably eliminate a need of heat sink for radiation of this generated heat. SOLUTION: This circuit is provided with a half-wave output passage control circuit 10 for half-wave rectification of the positive half-wave output of the AC power source, a storage circuit 14 which stores this positive half-wave output through a storage route passing loads L1 and L2 and discharges stored electricity through a discharge route passing loads L1 and L2 in the output period of a negative half-wave output, a discharge route forming circuit 12 which forms a part of the discharge route in response to the discharge output of the storage circuit 14 when the AC power source is in the output period of the negative half-wave output, and a voltage burden circuit 8 which is burdened with a prescribed voltage portion included in the positive half-wave output and suppresses the voltage applied to a load 6 to a low voltage and is placed on the outside of the discharge route in the output period of the negative half-wave output.
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