Alternative heated grip controller

Hey duck, where did you find that super tiny PWM? Or is that the same as the one in the white box and I'm just not seeing it correctly?

From post #10

I'm planning on doing this for some new symtec heated grip elements I'm getting soon - great ideas and will save a bunch from paying the $40 - $50 dollars for a heat troller!

Quick question - as I'm looking at the PWMs on Ebay - most of them have heat sinks - is heat a problem with these? Want to be aware in regards to where and how to place and encase them etc.



Thanks for any input/thoughts!

Not if they did their job right. One MOSFET properly configured to run in saturation mode (only full on or full off) will dissipate virtually no power by itself, it will just pass through current.

So if their circuit is well designed, and is running heated grips, you don't need either heatsink (much less both).

Hook it up and run it for 20 minutes and touch the heatsinks... if they aren't hot you shouldn't have to worry.

Cool! (pun intended..). That's what I thought should be the case - thanks for confirming. I'll test it to make sure as suggested but this frees me up as far as identifying locations for placement etc.

What about using the same pulsing controller I use for my W & S jacket? No heat sink needed.

We're using the ones posted above because they are $3 instead of $100 for what is essentially the same exact thing.

Also, last time I cracked open a WnS PWM controller I'm pretty sure it had a heatsink on it.

Quick follow-up: I believe that I should just hook the "High" temp wire from the grips to the controller and shouldn't splice the low in as well correct?

Do you have the sketchup file you can share? I'd like to duplicate the remote thumb wheel you you designed.
Thanks!

I'll dig around in my archive, I should have it.

When i first saw this I thought it was going on top the master cylinder. That would be a handy spot.

Any luck ever finding the sketchup files?

Just a heads up on the eBay PWM controllers.
They can introduce high frequency noise in intercom and on board audio systems.
Test before hard installing.

I think that is why the manufactured systems are very low frequency switching.