does anyone know how to do a mosfet mod for thunder chargers

maximan · Post by **maximan** » Thu Aug 07, 2003 4:20 pm

micro amps or ph2t help or anyone that knows how. i have been

but i cant find it

ph2t · Post by **ph2t** » Thu Aug 07, 2003 9:41 pm

Dude, post two photos. One for each side of the pcb and I'll see what I can do

ph2t.

hogjowlz · Post by **hogjowlz** » Thu Aug 07, 2003 9:49 pm

thundercharger pcbs are nice.

maximan · Post by **maximan** » Thu Aug 07, 2003 10:09 pm

hog could you take the pics my camera is at my house in cleveland and its broke and i am in columbus with my moms friend to go to a car show in norwalk

maximan · Post by **maximan** » Fri Aug 08, 2003 7:50 pm

ph2t i couldnt get a good focus but here they are my friends camera is not made fror these types of pics

http://www.pbase.com/image/20144728

http://www.pbase.com/image/20144752

maximan · Post by **maximan** » Fri Aug 08, 2003 9:27 pm

nevermind hog

crazydave · Post by **crazydave** » Mon Aug 11, 2003 12:41 pm

The batteries are charging in my camera. So I can't take a clear picture at the moment, so I'll use this one to explain the issue with TC PCBs.

See it looks like it's laid out like a MS PCB, but the transistors marked in yellow are the 2 odd ball ones you have to flip the mosfets on the MS board, but looking at the markings on the transistors of TC PCB, the 2 marked in red are the oddballs that need to be flipped. It's like they set it up backwards.

So this confuses me as to where to put the jumpers. I could probably figure it out, but I lack the focus at the moment, and I'm too lazy to go research which pins are the base, collector, and emmiter.

Maybe if someone doesn't have an answer soon, I'll go ahead and force my brain to work.

maximan · Post by **maximan** » Mon Aug 11, 2003 1:51 pm

dave here is a pic of what the pins do i got from the spec sheet

http://genji.image.pbase.com/u24/maxima ... 2paint.jpg

crazydave · Post by **crazydave** » Mon Aug 11, 2003 2:05 pm

I was just thinking that you could do it like this:

Also I'm pretty sure I know where to put the jumpers to do it properly, but need to wait until my cameras batteries are done charging so I can show you.

Only prob, I have no mosfets at the moment to test this out with, so it's all just theory at the moment. I pretty positive I'm right, but there is a slight chance that the transistors are the same as a MS board and they're just using the odd ball ones for steering. I don't think that's the case, but I felt I should warn you.

A little later today I'll swap a steering transistor to see if that's the oddball one.

crazydave · Post by **crazydave** » Mon Aug 11, 2003 5:43 pm

Ok, I swapped out the steering transistors for MS ones, and it definately is not the steering transistors that are the oddball ones. So I was correct in my original assumption.

crazydave · Post by **crazydave** » Mon Aug 11, 2003 7:45 pm

Ok here you go;

I traced the copper strip from the open contact, and determined the one on the top goes to the electrolytic capacitor, and the open contact on the second one down goes to the power source. See the picture.

Now I've swapped out both steering and forward transistors for microsizer ones, and determined that those are definately the 2 to flip. That I'm sure of, but the jumpers I'm only 99.99999 percent sure of, because I'm never sure of anything until I test it. I'm still mind boggled that my boards even work after I mess with them.

So until me or someone else has tested and confirmed that it works, Try it at you own risk

ph2t · Post by **ph2t** » Mon Aug 11, 2003 9:51 pm

CD, you're the new FetPimp!

ph2t.

crazydave · Post by **crazydave** » Mon Aug 11, 2003 11:18 pm

Well I don't know if I've reached pimp status.

...but I think I'm starting to get it.

hue35 · Post by **hue35** » Tue Dec 02, 2003 6:04 pm

Damn, I was finally getting around to trying this out and the diagrams are gone. Hey crazydave, do you still have the diagram you made for mosfetting a Thunder Charger?

crazydave · Post by **crazydave** » Tue Dec 02, 2003 7:32 pm

hue35 wrote:Damn, I was finally getting around to trying this out and the diagrams are gone. Hey crazydave, do you still have the diagram you made for mosfetting a Thunder Charger?

Sorry, just another thing I've been meaning get to.

Here's the updated, tried and tested way to do it.