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



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.

 

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.

 

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.

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