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-   -   Mosfet Power for single Cell Bitīs!!!! (http://tinyrc.com/forums/showthread.php?t=7794)

Grasziege 02-01-2003 04:39 PM

Mosfet Power for single Cell Bitīs!!!!
 
Hello People,

We developted a Mosfet modification for single Cell Bitcharīs
The car gets not much faster but the Motor has more Torque!!!

Here the complete guide how to doo it:

http://www.universalhost.de/html_bit...t_h-bridge.htm

Including a new icon. Use it!

http://www.uffschnitt.de/bit/fet_icon_1-2.gif

jedclampit 04-07-2003 11:17 AM

Great mod!
 
I recently did your dualcell h-bridge mosfet mod and all I have is reverse--Very Powerful reverse:) All my wiring is correct, can you tell me which mosfet does what in the picture on this page http://www.universalhost.de/html_bit...-bridge2_4.htm

I need to investigate the mosfet connections having to do with the 'Forward' circuit but I do not know which mosfets to investigate.

Thanks!

BillyP 04-07-2003 04:22 PM

(I'm confused.)
 
Why do you need a different mod for single cell and dual cell cars?

Also, has anyone measured the max current available to the motor with this mod? I would like to do this mod with a dual motor mod, where it would make a HUGE difference. If my 2.6's can each draw 200mA, but a bit can only put out 275mA, that's not good. This mod is absoluely necessary with 2 motors, or else it's like 1.375 motors! :p

strider_mt2k 04-07-2003 04:46 PM

I wish i could do surface mount!
I need to buy a kit or something because that's great!

jedclampit 04-07-2003 05:05 PM

I really don't know why there is a different mod for the single cell, prolly has to do with amps though.

I'm just a layman messing around a dinky little rc car on wild Saturday nights. Now I need to figure out which transducer (mosfet) does what on the pcb. Do you know looking at that link I enclosed? My board looks just like it in format. unbelievable power, no idea how the single cell would behave. I just have one direction working right now. have to check my soldering, replacing those little transducers is not an easy task at all, but now I'm hooked.

xatu 04-07-2003 05:58 PM

Wha? All you need to do is to remove one of those black things, and that other big black thing?

BillyP 04-07-2003 07:05 PM

xatu:
 
C'mon, you can do it too! You don't have to anything about electronics, just follow the directions!

xatu 04-07-2003 07:38 PM

Well, the thing is, I DO want to do it, but my chip looks like this (shen PCB) http://www.universalhost.de/html_bit...t/3platine.jpg

And, I don't know what to take out? There is something circled on that page, but there is nothing there on my PCB.

xatu 04-07-2003 07:47 PM

1 Attachment(s)
Here is a pic of my pcb.

xatu 04-07-2003 07:48 PM

1 Attachment(s)
And another:

xatu 04-07-2003 07:50 PM

Yea, this is really wierd.... I can figure out how to do it, and would experiment on my pcb, but I need it, for my project :p (I don't wanna wreck it!)

BillyP 04-07-2003 07:55 PM

Whoa! I was gonna reply at the exact same time as you! It showed your three post, I hit reply, and the "Topic Review" at the bottom shows four now!
This is a waste of a post!

xatu 04-07-2003 08:25 PM

Here is a easier link to read, it's in English! http://www.universalhost.de/html_bit/

Spanky 04-08-2003 02:28 PM

if all your getting is reverse, couldnt you just switch your motor wires around.. maybe im just confused here...

xatu 04-08-2003 05:27 PM

If you are talkin about me switchin wires, then yea, you're confused. I didn't say nothing about my motor goin in reverse.


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