Hi all,
I'm working on creating a strong electromagnet for fun and I wanted to try something a little different by created an AC based one. I have most of the components worked out, its a fairly simple thing but one thing that I am unsure of is how to deal with back-emf. Now in DC based design one will have a diode placed in parallel to the coil. But this is an AC design so I'm a little confused on how to address back emf here since trying to use a diode will prevent it from being AC. Also I'm very far from being a pro so perhaps there is something important I'm missing conceptually. Any thoughts? I'm designing it to push about 1.5 amps from an 18 volt wall transformer through a set of higher wattage parallel resistors. Thanks in advance.
I'm working on creating a strong electromagnet for fun and I wanted to try something a little different by created an AC based one. I have most of the components worked out, its a fairly simple thing but one thing that I am unsure of is how to deal with back-emf. Now in DC based design one will have a diode placed in parallel to the coil. But this is an AC design so I'm a little confused on how to address back emf here since trying to use a diode will prevent it from being AC. Also I'm very far from being a pro so perhaps there is something important I'm missing conceptually. Any thoughts? I'm designing it to push about 1.5 amps from an 18 volt wall transformer through a set of higher wattage parallel resistors. Thanks in advance.