Counting Relays

By Keelan Lightfoot, ; posted March 20, 2002; hits 3311


A picture of the counting relay schematic that i've come up with. With the rising edge of the input pulse, relay A2 closes, and latches relay A3. With the falling edge of the input pulse, relay A2 opens, connecting the pulse input to the next counting module, and closing relay A1, which disconnects relay A2 from the pulsing input. The diode is there to stop A2 from latching onto the ground provided by the upper contacts of A3.

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