| 摘要 |
An improved protective circuit provided by which a silicon controlled rectifier (SCR), or equivalent device, is switched into circuit with a power supply in the presence of excessive output voltage, so as to protect the electronic equipment which is normally energized by the power supply. The protective circuit of the invention is such that the silicon controlled rectifier is not subjected to excessive currents so that it need not be excessively large, and no heat sink is required in conjunction with the silicon controlled rectifier.
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