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timer circuit

  1. P

    Help please, will this circuit work.

    Can anybody advise me if the circuit attached will function as required. The external timer supplies a 6 volt signal to the relay coil for between 3 & 9 seconds, this in turn drives the 12 volt motor for the 3 to 9 seconds & it also charges the 220uf capacitor. At the end of the 3 to 9 seconds...
  2. T

    Delay on - Instant off timer

    Hi to all - newbie here, I am a programmer with basic knowledge of electonics, so please forgive my ignorance. I'm trying to create a circuit (maybe using a 555???) that meets the following criteria: The circuit has 2 inputs, the 1st is a NC momentary switch and the 2nd one is a NO momentary...

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