I intent to do some tests with a small electromagnet repelling a hanging magnet (imagine a pendulum) in a controlled way.
With the switch open, I plan to discharge the cap on the inductor via SCR1 and to cut the discharge at a certain instant after, through SCR2. Both tyristors under control of a micro so I can adjust the timing finely.
For the moment I am planing to work with no more than 30V (and probably even much less) and if at all possible with low current, whatever that is in this context.
1 - Do I need a diode in parallel with the inductor? If so, how it should be connected?
2 - A bigger magnet against the same coil will result in a more effective repulsion?
Comments, caveats, suggestion are appreciated.
With the switch open, I plan to discharge the cap on the inductor via SCR1 and to cut the discharge at a certain instant after, through SCR2. Both tyristors under control of a micro so I can adjust the timing finely.
For the moment I am planing to work with no more than 30V (and probably even much less) and if at all possible with low current, whatever that is in this context.
1 - Do I need a diode in parallel with the inductor? If so, how it should be connected?
2 - A bigger magnet against the same coil will result in a more effective repulsion?
Comments, caveats, suggestion are appreciated.