Hi fellows, I am building a CNC controller, and need to build a power supply for the steppers. I need an unregulated supply of 80V max at 20 ampers DC. So I'm looking for cheap ways to regulate 120vac down to 80vdc. It has been years since I played with an SCR, but I have a couple 40A 600V SCR's in my box.
I plan to use the SCR's as switchable rectifiers to charge a cap bank up to 80V.
Is this even possible with SCR's?
What kind of trigger circuit would I need to control the scr based on voltage stored in a large cap? 80V is MAX, down to 50 under load is OK but not desirable. I **can** go to a microcontroller IF I have to...
Will just a simple pot from the cap+ & ground to the trigger work to regulate the voltage?
Many thanks for a solution.
BTW, I am quite familiar with electronics, so don't try to water it down too much!
Thanks!
LS
I plan to use the SCR's as switchable rectifiers to charge a cap bank up to 80V.
Is this even possible with SCR's?
What kind of trigger circuit would I need to control the scr based on voltage stored in a large cap? 80V is MAX, down to 50 under load is OK but not desirable. I **can** go to a microcontroller IF I have to...
Will just a simple pot from the cap+ & ground to the trigger work to regulate the voltage?
Many thanks for a solution.
BTW, I am quite familiar with electronics, so don't try to water it down too much!
Thanks!
LS