I understand using an AC voltage to control a DC solenoid will cause it to chatter or possibly not function at all. I read the following post:
http://forum.allaboutcircuits.com/threads/ac-through-dc-solenoid.31610/
What I want to do is use a car starter solenoid 12 volt DC (with an AC to DC converter) to control a current that remains AC.
I'm making a battery tab welder like one of the many tutorials on You Tube. The thing is is that I want to have multiple safety switches to control it an ensure that things don't run away, or hurt me or somebody else, who happens upon it. I know I can buy one for $150 But I can build this with two solenoids for near nothing. What I'm worried about however is what a low ac voltage (5-10 volts) but high current (several if not many hundred amps) would do to a DC solenoid. I understand a little bit about magnetic fields and other stuff like that I learned in my engineering classes, but I didn't finish my degree and don't work with this stuff outside my work shop so can somebody explain if this idea won't work?
One of the big reasons I want to use the solenoid is to put a center tap in the transformer so that I can have a high and a low setting on the welder, which will require two solenoids and a little extra wiring.
http://forum.allaboutcircuits.com/threads/ac-through-dc-solenoid.31610/
What I want to do is use a car starter solenoid 12 volt DC (with an AC to DC converter) to control a current that remains AC.
I'm making a battery tab welder like one of the many tutorials on You Tube. The thing is is that I want to have multiple safety switches to control it an ensure that things don't run away, or hurt me or somebody else, who happens upon it. I know I can buy one for $150 But I can build this with two solenoids for near nothing. What I'm worried about however is what a low ac voltage (5-10 volts) but high current (several if not many hundred amps) would do to a DC solenoid. I understand a little bit about magnetic fields and other stuff like that I learned in my engineering classes, but I didn't finish my degree and don't work with this stuff outside my work shop so can somebody explain if this idea won't work?
One of the big reasons I want to use the solenoid is to put a center tap in the transformer so that I can have a high and a low setting on the welder, which will require two solenoids and a little extra wiring.