Originally Posted by jj604
Fred, just looking back at your post, I assume these are not regulators but straight MOSFETS since you took them out of a dead ESC? As such they presumably are just acting as a dropper really. What values of resistor did you use to make them run in linear mode?
Sorry John, I should have stated the BEC part of the ESC. They are 5V regulators good for around 1A with proper cooling. There were two stacks in parallel, and two in each stack. Without capacitors, the (noload) output was just above 10V, so the capacitors were needed to get proper regulation. I'm not sure these fancy to be bypassed (having 12V on the input), so a double-throw relay is probably needed to select either 5V or 12V.