Sorry for waking such an old thread.
I was wondering if anyone makes a board, or kit, or module that provides the power dumping features?
On my servo power supply, I built a board based on Mariss's design (from the gecko yahoo group) with a few different parts. It work fine for a couple of years, then one day, I turned the power on, and after about a minute, there was a big bang, and lots of smoke coming out of the enclosure. The power resistor and the pcb around the resistor were toasted.
If I can't find a ready made one, I'll try building another.