Pulse generator circuit uses the interrupt beam

Published:2011/6/22 3:47:00 Author:TaoXi | Keyword: Pulse generator, interrupt beam | From:SeekIC

When the object on the band carrier keeps out the light, this circuit will output a pulse. The light source makes the photoelectric transistor to keep in the conduction state. This will produce a high logic level voltage on the Schmitt inverter, and it also produces the low logic level voltage on the pin-5 of the monostable circuit which is compatible with the TTL. When the object keeps out the light, the TIL81 turns off the Schmitt inverter to trigger the monostable circuit.



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