I’m wondering if anybody has any ideas how to put a onslon black flat inside a D1S (or any similar sized thrower) I just bought 4 of the LED from mouser electronics, now I have no idea what MCPBC to put it on and what driver to use, I would appreciate the help if anyone knows
Alright so basically just keep everything and reflow the Olson onto the MCPCB and isolate it form the pill with glue then put paste under the glue, easy enough
I was in contact with vinh from skylumen and he informed me that I can use the driver and Mcpcb as long as I use a 10a max discharge battery
Edit: and I use thermal epoxy underneath like other people have been saying, I only asked him because he did this exact mod but discontinued it for some reason
A typical FET driver uses a N channel FET which switches the cathode/LED-/GND side of the emitter, that’s why on all the BLF based drivers LED anode (LED) is directly wired to BATT. In the case of the OLSEN, since the thermal pad and the cathode are electrically connected our drivers don’t work w/o the MCPCB being isolated cause it’s technically as if LED- is shorted to ground therefor bypassing the driver.
A P channel FET switches the + side so the fact LED- goes straight to ground doesn’t matter and the MCPCB doesn’t have to be isolated since switching happens on the anode (LED+) side.
A good simple way I’ve used to electrically isolate the MCPCB from the shelf is with a couple narrow strips of kapton or Scotch tape. Make sort of a perimeter of tape around the edge of the MCPCB. The tape acts as a spacer preventing metal to metal contact. Kapton tape is only around 50 microns thick so it doesn’t really add thickness. Then use any ceramic-based thermal paste or adhesive.
I wouldn’t use kapton tape anywhere heat needs the least impeded path possible. Much worse of a solution than thermal epoxy… Hell I’d use UltraGrey RTV before kapton.