发明名称 |
OVERLOAD PROTECTION CIRCUIT |
摘要 |
<p>This invention refers to an overload protection circuit for an oscillatory circuit driving an electro-acoustic converter and more specifically concerns a circuit for automatically inhibiting the oscillatory circuit in the presence of an overload. The overload protection circuit monitors the collector-emitter voltage signal and the base-emitter voltage signal for providing an overlap signal responsive to the interval when both mentioned voltage signals are in their high condition. Such a condition is indicative of the power dissipated in a switching transistor of the oscillatory circuit. The overlap signal is integrated and the integrated signal is compared to a predetermined voltage level. When the integrated signal exceeds the predetermined voltage level, the oscillatory circuit is inhibited.</p> |
申请公布号 |
CA1035860(A) |
申请公布日期 |
1978.08.01 |
申请号 |
CA19750242093 |
申请日期 |
1975.12.12 |
申请人 |
BRANSON ULTRASONICS CORPORATION |
发明人 |
QUIST, ERIC G. |
分类号 |
H03B5/04;G01R1/36;H02H7/122;H03B5/12;(IPC1-7):02H7/20 |
主分类号 |
H03B5/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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