Newbie Trying Something...

Discussion in 'The Projects Forum' started by theo.gresse, Jul 3, 2011.

  1. theo.gresse

    Thread Starter New Member

    Jul 3, 2011
    Hi everyone!

    I want to build a machine, but have SUPER limited knowledge on circuits and electronics.

    First thing i need to do is to control Solenoid 1 for a certain amount of time (preferably .1 to say 5 sec max).

    Once solenoid 1 has finished operation, i need a short delay, say 1 sec and then solenoid 2 should open for say 2 sec.

    System runs on initial 220v input, and i would like internals to run on 12v. Solenoids are 12v.

    There is a lot more to come, so if there is someone willing to share some knowledge, I would greatly appreciate it!

  2. simo_x


    Dec 23, 2010
    You need off course a transformer, a bridge diode and a capacitor for ripple voltage.
    If you want a stable 12Vcc for the circuit, a 7812 would be the better option.

    For delay timing control I think you can use a simple 555 timer acting as a delay circuit to switch the operation..

    I don't understand exactly what you mean for "then solenoid 2 should open". Could you explain more about what you want to do, exactly?
    Also, for 12V solenoid you mean one like this
    or a relay?
    Also, how much current will need your load?