I use || for the parallel operator when working with impedances, as in (R12 || Rcoil). Just don't expect programming languages to understand it though!
It makes sense. The relay gets a kick from charging the capacitor (C7) and the resistor (R12) eventually limits current. I've seen this before.
Doesn't work with AC, and the OP's application was an AC coil.
Doesn't work with AC, and the OP's application was an AC coil.
If you have a variac find out the minimum pull in voltage and the minimum hold voltage for your AC coil relay. To reduce the voltage on the AC relay coil just put a capacitor in series with the coil. The capacitor will have to be able to handle at least the full line voltage. I used this trick to reduce the voltage on the relays on my ground source heat pump. My original line voltage was 117/205 It went up to 125/250. The same trick is used in old multi speed ceiling or floor fans. Use the formula C= 1/(6.28 *F * Xc) Xc is the impedance of the capacitor ie 10-20% of the coil. Put an arc suppressor across the relay contacts.
I do. I did. And I took some advice from Chris. It worked out very well!
OMG Chris changed his avatar thingy!
Kooky.
I'm down with that.
Wow. You've had that avatar since the early 2000s. I don't think you have ever changed it.
Live it up man. We have only one life to live.
Cheers.