| 摘要 |
A circuit for protecting a protected circuit against radiation has a PIN diode series coupled to a laser, which is optically coupled to a photodiode. The photodiode is coupled to the protected circuit. When radiation occurs, the resistance of the PIN diode increases, which causes the laser to cease emitting light. In turn, the resistance of the photodiode increases, thereby decreasing the current from a power supply through the protected circuit.
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