8_CHOICES_WITH_3_WIRES

Published:2009/7/19 23:30:00 Author:Jessie | From:SeekIC

Provides remotely selected choice of eight functions, such as channels in mobile FM station, with only three wires running from control head to controlled equipment that can be in front of car. System involves converting 8-position switch selection in control head to 3-bit binary form for three control wires going to three-relay arrangement for decoding back to 8-position format. Relays are two-pole and four-pole double-throw 12-V units.-G. D. Rose, Independent 8-Channel Frequency Selection with Only Three Wires, QST, Aug. 1974, p 36-40.



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