I have a solenoid valve that is 120 volts, I would like to run it off a battery ... what can I do? Amp-op it?
Answer:
Well, I think you may have a problem since your solenoid probably runs off 120 AC and the battery is DC. Instead of creating a Rube Goldberg run some nice 120VAC to it. OK?
There isn't an Op-Amp in the world that runs off of 120V (ac or dc)
Get an inverter to give you 120V. A.C. from your battery, or buy a D.C. solenoid matched to the battery voltage.
A.C. an D.C. solenoids are not interchangable even if the voltages match.
I assume 120 volts is AC. Based on this here is what you do.
1. Get a proper rectifier that will take the dc power from your battery and generate a reasonable sign curve. (dc to ac conversion.
2. Get a transformer to step the voltage up to 120V.
Now, how are you going to control this valve?
the power output of the battery has to be amplified using an amplifier and then sent thro the solenoid
If it were me I would get a solenoid that matched the voltage. There are solutions, but would be much more costly than most solenoids. Even if the whole valve needs to be replaced, it is better and cheaper than the other possibilities.
Consider looking into automotive components. Most of the solenoids run on 12VDC. This might be a cheap solution.
This would make a "cleaner" system as well. The more you try to do thing unconventionally, the harder it is for someone else to work on it. More components sometimes equal more problems as well.
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