| 摘要 |
A stabilized direct current power supply includes a switching device for selecting DC stabilization operation of the chopper type in the operation mode, in which heating and power consumption in an electronic device could cause a problem, in order to soften the problem. Alternatively the switching device selects DC stabilization operation of the linear control type not generating noise in the operation mode, in which noise for the electronic device circuit could introduce a problem, but heating and power consumption causes no problem. Further, the power supply uses a series transistor common to both types of DC stabilization operation.
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