Electromagnet using ssc-32

Is there any way to attach an electromagnet at the end of the SES Arm and have it connected in a way so that you can control when current is allowed in the magnet. Can the ssc-32 be bridged anywhere to provide a constant current rather than the pulses that servos use? To make sure I’m clear, I want to attach an electromagnet on the end of the arm, and specify when I want the magnet on or off so that I can pick up a metal object and move it to a new location and release it.(this will be a small magnet picking up small pieces) Thanks in advance for any help

You could use one of the battle switch relays if your electromagnet is less than 10A. If you do this though make ABSOLUTELY CERTAIN you include a protection diode across the magnet AND the relay output or you will eat the relay contacts in very short order. your electromagnet will be very inductive so you need to protect the switch. :wink:

is there a smaller one that I can use? I can’t see needing even close to 10A for my electromagnet.

There is one called a pico-switch I believe. Not sure I understand your comment about “needing even close to 10A” though. 10A is simply the rating for that relay, a not to exceed value, not some sort of must operate type specification. Also please note that switching highly inductive loads can be highly abusive to mechanical contacts so having a larger than needed relay or switch isn’t necessarily a bad thing as it will last longer (before the contacts are all pitted and loaded with carbon).