Carrier-Operated Relay Circuit Diagram shows a COR/CAS circuit for repeater use. CR1 is a silicon diode. 2 may be any relay with a 12-V coil (a long-life-reed relay is best). R2 sets the length of time that K2 remains
closed after the input voltage disappears (hang time). shows a timer
circuit. Values shown for Rl and CI should provide timing up to four
minutes or so. CI should be a low-leakage capacitor; Ql is a
silicon-controlled rectifier, ECG-5452 or equivalent.
Kl may be any
miniature relay with a 12-volt coil. The timer is reset when the supply
voltage is momentarily interrupted. The switch must be in the reset
position for the remote reset to work. This circuit operates from the
detector output of a receiver. A delay circuit is included so that the
relay stays closed for a time period after the carrier output from the
receiver disappears.
Carrier-Operated Relay Circuit Diagram
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