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Signal-controlled switch I

Signal-controlled switch I
The signal-controlled switch actuates or deactuates a.f. equipment, including preamplifiers, power amplifiers, and filters. It is particularly useful for battery-operated equipment since, owing to the low current drain of 12-14 A, there is no need to switch the a.f. equipment off. When the switch has not detected any a.f. signal for ten seconds, it switches off the supply to the equipment.
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