| 摘要 |
This relates to an electronic circuit which is designed to supply 115 volts AC power to loads of up to 550 watts for a predetermined time period of wide latitude. An "on" cycle is initiated by momentary closure of an external control line pair with a closed contact current flow of less than one half milliampere. The "on" controller may be located at any convenient distance from the load switching circuit and may be a coin operated switch. The electronic power control circuit is fabricated from discrete components including one integrated circuit installed on a printed circuit board (17/8''x27/8'') which is finally encapsulated in a hermetically sealed 2''x3'' module suitable for operation in a moist or corrosive environment.
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