welder Archive
WTF is a Saturable Reactor?
![](http://steampunkworkshop.com/wp-content/uploads/2022/06/satreact-685x275.png)
A saturable reactor is an arcane piece of electrical kit that modulates a large AC current with a small DC input. This unit was removed from a Bridgeport Series II CNC milling machine where it was used to regulate the power supply to the stepper motor drivers that moved