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CD4060B based highly reliable general-purpose timer circuit

Form as shown for the introduction of highly reliable general-purpose CD4060B timer circuit. The circuit timer time can be from 1 to l hour, the third block by the control switch S2, that is: S2 set to 1, the regular time of 1 ~ 20 seconds; S2 set 2, the regular time of 15 to 320 seconds; S2 set 3, the regular time of 4 to 85 minutes. PR calibration circuit can be time time. Timer mode is counting type. CD4060B binary counter 14-stage, S1 from l to 2, the circuit automatically cleared, regular time to start, J does not move, the normally closed contact connected to J1, socket External power supply voltage on CZ. Time after time, CD4060B output high, the transistor turns on VT, J power moves, J1 contact disconnected, CZ cut off power supply, the end of regular time.

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CD4060B based highly reliable general-purpose timer circuit