will this solenoid swap work?

Discussion in 'The Projects Forum' started by minkey01, Sep 12, 2015.

  1. minkey01

    Thread Starter Member

    Jul 23, 2014
    177
    0
    I would like to use this attached circuit for my solenoid of 24V, 33ohm, and 727 mA specs.

    Solenoid Driver.jpg

    V1 will be 24V
    V2 will be 12V
    Vcc will be 5V

    Control Input Signal will be a control signal from a microcontroller.

    The only worry is that the original solenoid that I'm replacing had a much lower power rating. Can someone tell me if my new solenoid will work in this circuit? Or will the power be too much? New solenoid is 17 watts from Ohm's Law. The original was around 0.78 watts.



    This is the webpage :

    http://www.theleeco.com/engineering...e-solenoid-valve-drive-circuit-schematics.cfm

    Thank you for the advice.
     
    Last edited: Sep 13, 2015
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,564
    2,379
    With the new solenoid being much lower current, is there any need for the power reduction upon activation? IOW why not drive it direct now, that is if the solenoid is up to the task in question.
    Max.
     
  3. minkey01

    Thread Starter Member

    Jul 23, 2014
    177
    0
    New solenoid is more current, not less.

    NEW:

    ACTUATION : 24V, 0.72727 A, 33 ohm, 17.45 W
    HOLD : 12V, 0.36364 A, 33 ohm, 4.36 W

    OLD:

    ACTUATION : 24V, 0.0325 A, 738.46 ohm, 0.78 W
    HOLD : 12V, 0.01625 A, 738.46 ohm, 0.195 W
     
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