12V Motor / Solenoid Circuit

Discussion in 'The Projects Forum' started by kmatz, Mar 15, 2010.

  1. kmatz

    Thread Starter New Member

    Mar 15, 2010
    Hi All,

    I'm new to the forum, but from reading through posts i can tell there is a lot of knowledge here.

    Pretty simple problem:
    School project, using a 12V battery to operate a small motor and a valve's solenoid. I think I've got the circuit, but am not positive... (see diagram).[​IMG]
    Does this make sense? Are there any other considerations i should add?

    Also trying to make a cheap battery charger for this... i have an ac-dc converter, and a cig lighter battery charger... will these do the trick?

    Thanks in advance for your advice.
  2. Bernard


    Aug 7, 2008
    Looks workable; R1~ 47 ohms @ 1/2 W, snubber in parallel with SOL1- 62 ohms ,1/2 W, in series with .1uF; maybe diode in parallel with CR1, cathode toward +.
    kmatz likes this.
  3. kmatz

    Thread Starter New Member

    Mar 15, 2010
    Awesome, thanks for your help!