Misc Unfinished Solid State Interrupter
By Ken Martin, ; posted February 26, 2006; hits 1520
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| This is a circuit I started in 1980 to replace mechancial interupters and timing circuits. The goal was to produce 30, 60, 120 and modified 120(SP)IPM. Where 30 was for Busy, 60 was for Reorder and modified 120(SP)IPM was used in Electronic C.O.'s (perhaps others at a later date) for "critical" alarms. The modified 120IPM was generally hooked to a wall mounted tone bar (or tome bars) via Alarm relays which resulted in a Ding, Ding, Pause, Ding, Pause, Ding, Ding. |