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Unread 04/02/2017, 11:40 AM   #12
macdaddynick1
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Join Date: Nov 2014
Location: Los Angeles
Posts: 537
Quote:
Originally Posted by theatrus View Post
Note that the 555 can't power the solenoid directly. An N channel FET or an NPN transistor is required. Also, to get the different duty cycle the 555 board needs a diode in the timing circuit. You can bodge it in if need be.

I'll post a complete schematic and suggested parts today, and plan on doing a build soon to validate it.
Nice, I can't wait. Even though I already bought myself a burkett solenoid and a fancy needle valve to replace my carbon doser. This could actually be a better alternative to using a needle valve.


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