发明授权
US3939308A Electronic side of line detector 失效
电子线检测器

Electronic side of line detector
摘要:
A side of line detector with a single operational amplifier with adjustable output. The amplifier input is protected from positive and negative voltage spikes by diodes. Two transistors are coupled to the amplifier to set a comparator voltage reference which allows the rejection of leakage and noise. Test points are provided in the circuit to facilitate testing particular subcircuits and to allow the initial adjustment of the detector.
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