| 摘要 |
An electronic circuit for protecting a photomultiplier against overloads is provided. The photomultiplier has a cathode, an anode, a plurality of dynodes and a voltage divider. The circuit includes a high-voltage source, which applies a high voltage to the photomultiplier. A protective switch is set up for preventing a current flow through the anode. A comparison device is configured for comparing a load signal characterizing the loading of the anode with a maximum load signal and for driving the protective switch in accordance with this comparison.
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