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Need help with T2 solenoid driver circuit!
Beley:
This is the circuit i would probably use
1UP:
The relay sounds like a good idea. I've always been worried about grounding the two together. So, the diode would be used to absorb the relay's back EMF current spike?
What do you all think of Beley's circuit above?
ErikRuud:
The above circuit looks better than the first. It has the diodes to block the back emf.
But using a relay, solid state relay, or an opto-isolator chip would be even better. The opto-isolator might be overkill and would complicate the circuit, but it would provide the best protection. I think they were discussed in another thread.
1UP:
--- Quote ---The above circuit looks better than the first.
--- End quote ---
1UP:
Hey, WTF does the abbreviation VA mean in electronics terms? (I have a relay rated at 10VA)