| 摘要 |
A speaker protective circuit is provided designed to be interposed between the speaker transducer and driving signal source. The protective circuit includes a silicon controlled rectifier shunted across the transducer adapted to fire in response to either repetitious, intermittent power surges or continuous high level surges and a circuit breaker in series connection with the driving signal source adapted to open circuit in response to long duration power surges or a series of closely spaced short duration surges.
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