Help With H-Bridge - Electronic Circuits Projects Diagrams Free

Moisff · 27th March 2008, 01:08 PM

Hi guys, i'm making an H-Bridge motor driver for a water gun turret. The idea is that when i send a 5v signal to one side it turns the motor one way and when i send a signal to the other side it turns the other way. Quite simple really and i'm sure everyone's seen an H-bridge before.

Anyway this is my problem:

-Testing it out on Multisim there were no problems at all
-Building it on the PCB and testing it caused the TIP 125's to blow up

This wasn't expected. I've uploaded a PDF with my testing on Multisim and my circuit design for it, if anyone could point out any glaring mistakes for me i'd greatly appreciate it.

Cheers

Moisff · 27th March 2008, 01:13 PM

Also it's saying i've uploaded the pdf but nothings showing up. I'm a newbie to this forum so any help would be appreciated

**3v0** · 27th March 2008, 01:22 PM

Try again and check to be ensure that you PDF is not larger then the max size allowed.

Moisff · 27th March 2008, 07:41 PM

It goes through all the process and when it's finished the screen just goes blank. Who do i contact through the website about it?

**3v0** · 28th March 2008, 12:05 AM

PDF's are limi9ted to 9.54 MB what size it the one you tried to upload?

I tested the PDF upload and it seems to be working.

dknguyen · 28th March 2008, 03:38 AM

!!! You can upload PDFs here?! WHy have I then been printing screen, pasting in PaintShop, and cropping the image like a fool when I can just print it as a PDF and upload it?

bloke_man · 29th March 2008, 02:21 AM

Quote:

Originally Posted by Moisff

Hi guys, i'm making an H-Bridge motor driver for a water gun turret. The idea is that when i send a 5v signal to one side it turns the motor one way and when i send a signal to the other side it turns the other way. Quite simple really and i'm sure everyone's seen an H-bridge before.

Anyway this is my problem:

-Testing it out on Multisim there were no problems at all
-Building it on the PCB and testing it caused the TIP 125's to blow up

This wasn't expected. I've uploaded a PDF with my testing on Multisim and my circuit design for it, if anyone could point out any glaring mistakes for me i'd greatly appreciate it.

Cheers

Some H Bridge theory found here:

http://www.mcmanis.com/chuck/robotic...dge/index.html

also PWM control.

Cheers!

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27th March 2008, 01:08 PM	(permalink)
Moisff	Help With H-Bridge Hi guys, i'm making an H-Bridge motor driver for a water gun turret. The idea is that when i send a 5v signal to one side it turns the motor one way and when i send a signal to the other side it turns the other way. Quite simple really and i'm sure everyone's seen an H-bridge before. Anyway this is my problem: -Testing it out on Multisim there were no problems at all -Building it on the PCB and testing it caused the TIP 125's to blow up This wasn't expected. I've uploaded a PDF with my testing on Multisim and my circuit design for it, if anyone could point out any glaring mistakes for me i'd greatly appreciate it. Cheers Last edited by Moisff; 27th March 2008 at 01:11 PM.

27th March 2008, 01:13 PM	(permalink)
Moisff	Also it's saying i've uploaded the pdf but nothings showing up. I'm a newbie to this forum so any help would be appreciated

27th March 2008, 01:22 PM	(permalink)
3v0	Try again and check to be ensure that you PDF is not larger then the max size allowed. __________________ search engine for electronic parts Junebug USB PIC programmer kit., USB Bit Wacker, Homepage The 15 Minute Printed Circuit Board! (+drill time)

27th March 2008, 07:41 PM	(permalink)
Moisff	It goes through all the process and when it's finished the screen just goes blank. Who do i contact through the website about it?

28th March 2008, 03:38 AM	(permalink)
dknguyen	!!! You can upload PDFs here?! WHy have I then been printing screen, pasting in PaintShop, and cropping the image like a fool when I can just print it as a PDF and upload it?