T&L Publications

HA! That’s a coincidence. I was talking with a friend the other day and subject of modding a Billy Bass came up. I would be interested in seeing that article as well.

Hi guys, @ Bigglez , I was using a 4 kHz frequency with this last circuit. I'm going to try two in parallel when the hardware arrives. So far this is what I have come up with for the case/sink. http://www.wiredvoid.com/MiscPics/WVFC_SINK2.JPG http://www.wiredvoid.com/MiscPics/WVFC_SINK3.JPG

I pulled an aluminum project box out of the closet and ordered some insulating spacers. I have made some progress and I learned some new techniques to add to my mental tool box. Thanks for taking the time to help me, I really appreciate it.

Thank you Viking , very informative. You still need to get the heat out of the sealed box. How about a cast aluminum box, mount the MOSFET to the box using thermal conductive, electrical insulating hardware; then the box is a big heat sink. Cheers, I have an aluminum box lying around, It would be gr...

jwax wrote: Keep in mind the charger is about the
size of a marine battery and has a picture of an upside down
cow on fire on the cover.

HA!
That's pretty dang funny.

I am building a controller for an automotive fan, the fans I’ve looked at range from 9 to 16 Amps. I’m using a IRL540PBF MOSFET and PWM signal from a PIC to adjust the speed. Heat is not an issue I have dealt with much in the past, and I'd REALLY like some advice about the heat from the MOSFET. ...

I don’t have an answer to your question, but what is it that you’re using PWM to control?