Making an esc better? - RC-Monster Forums

04.16.2008, 06:57 PM

What is the point of these Zener diodes? What is there function, and exactly how do you solder these things to the board? Thx!

GriffinRU · 04.18.2008, 01:53 PM

Quote:

Originally Posted by cadima

What is the point of these Zener diodes? What is there function, and exactly how do you solder these things to the board? Thx!

04.16.2008 07:24 PM

DrKnow65

I believe suicideniel is correct about the "clamp" function. I just soldered mine to the back side of the power board where the battery leads poke out.

04.16.2008 07:01 PM

suicideneil

I believe they are refered to as 'voltage clamps', and the purpose is to absorb transient voltage spikes that might harm the cap or batteries... something like that I think i read a while back...

They are surface mounted normally, so good soldering skills and a good iron are required.

- Just to add for the comments above
Zeners/Transorbs voltage was selected to protect FET's from voltage spikes, running at 4-5S close to FET's rated voltage and for caps. With temp going up caps rated voltage goes down as well over the time, so to keep them happy I installed zener.

And as bonus reverse polarity protection for FET's, not for wires and bad soldering :)
DO NOT CHECK it!