Tronic's DIY dual Mosfet H-bridge (DSMhb)

Hello to all! :hi:
can we use the hbridge as to what voltage 36v? No changes n is required, such as for example 15V zener

after some setbacks and a nice campfire , I ask questions! Excuse me but the ball nor I know anything about electronics! : thank you

Me again...

Can i use 1N5822 diodes, instead 1N5818 diodes?

I´m starting to think my local dealer is laughing at me...

Thanks

People,

I don't understand to much about electronics, but I'm shure I'm able to build the H-bridge and the Controller following the instrucions and pictures available here in X-SIM.
I'm researching an engine to run a Joyrider with power and speed.
I have two doubts that I'm shure you guys can help me.
Whats the engine specs I need to respect to use this H-bridge? It has to be an electric DC engine with brush, 12v (can I use 24v engine without any changes in the bridge?), and a maximum of 30amp. That's it?
And the second one, I red that to run a Joyrider I need at least 60rpm. Anyone can tell me the ideal rpm to run it at a good performance? (to play racing games) And the torque?

Thanks!

André Cestari

Hey guys!

What voltage is fine for wiper motors?

I´m trying with 12v 18 A from a PC ATX power supply but the wiper motor moves to slow...

I´ve increased the voltange to 24 Volts, with alternate power supply and works fine, but I don´t know is ok...

The H Bridge Output is small from the input voltage?

Thanks :

hellooooooooooooooooooo?

Hello Thanos,

First of all THANK YOU for this H-bridge. And what a great site this is. After hours of googling I finally came across this site. My eyes are square and hurting at this moment. Read this whole thread and the one about the motion controller. I actually need the H-bridge for another projekt.
The plan is to use this H-bridge together with a hacked Servo (take the A and B output from the internal servo board, and bring it to the H-bridge) I have to use it to control it via DMX software (build a DMX to servo output signal board) But i need to use a WW motor to be controlled as a servo. I will order parts tommorow and start etching the boards upcoming week ;-) I'm Back in the hobby again !!

Funny, i'm hooked to this site already. I made plans for a motion simulator a few years ago already. I think the game was GP2...no or limited output support for telemtrie data. And I (still) lack the abillity of proper programming. This X-simulator is the key. And the video of your motion simulator is just outraging!!! Finally after years have passed I can start this projekt. Lot's of reading to do the coming days ;-)

kind regards,
Maurice

p.s. I have a friend living in Athens, she used to teach me this riddle about good morning mr camel man.....calimero calimaro....funny, but i forgot hehe)

Hi guys!

Please help me, in my city I can buy only IRFZ48R and IRF3205 MOSFETs....
Can you give me some advice on which(IRFZ48R or IRF3205 ) is better for replace IRFZ44 ?

Tronic, I have just noticed, that when you upgraded the v1.0 H-Bridge to v1.2b, you have reversed the Drain and Source connections of the IRF4905 mosfet and now the drains of the IRF4905 and IRFZ44 are connected together. In the H-Bridge Schematic it shows the Drain of the IRF4905 connected to the Power supply.



When using two different power sources, a car battery for the H-Bridge and a transformer or a plugpack for the AMC1.5, how does the Gnd from the 74HC08 connect to the Gnd of the H-Bridge to complete the circuit of the 74HC08.

Senetor.

Tronicgr,

I think I have found the reason why so many people are having so many problems with the N-Channel Mosfets.
On the schematic and parts list you have the N-Channel Mosfets listed as IRFZ44, they should be listed as IRLZ44N which are logic level Mosfets, which will turn on fully from the 5v signal from the 74HC08.
The IRFZ44 Mosfets require 10v to turn on fully, and require a dedicated driver to turn on, and because they cannot turn on fully with the 5v from the 74HC08 get too hot and go up in Smoke. Therefore Logic Level Mosfets must be used to be able to fully turn on.

R-eng used STMSTP80NF55-06 Mosfets and raised the voltage to the 74HC08 to 6v to try to compensate.

I am using the STP80PF55 for the P-Channel and STP80NF55L-06 for the N-Channel which are logic level Mosfets.

IRLZ44N.pdf
STP80NF55L-06.pdf


Senetor.

Hi all!

We have already tested it and wrote about it in our thread.
http://www.x-simulator.de/forum/russian-2dof-wiper-motor-simulator-t2299-30.html#p22793

Actually better to use logic level mosfet IRLZ44N instead IRFZ44N it this circuit.
This is true and works. I think need to fix parts list.

thank you senetor. i ve heating problems too. i will try logic mosfets

I found a schematic from an app note from Unitrode Texas Instruments, U-102. If you want to experiment and try to low the heat in the IRFZ44N try to modify it with this circuit, adding NPN transistor Q3 and Q4 to the N-Channel Mosfets, instead of driving them direct from AND gates (74HC08).


regards, Willy

Thank willynovi!
We have tried alternative circuits of HBridge. I have developed a PCB. But we have problems with control of PWM. Here is a small video.

http://www.youtube.com/watch?v=nDnngsEmoRo

Proposed version looks good and easy. This circuit is designed Texas Instruments, I think can trust. I'll now have a normally functioning Hbridge by Thanos with IRLZ44 logic level mosfets. After building my simulator, I want to try other HBridges. Maybe I'll try and this.

WBR, Nickolay.

Hi everyone and especially Tronic.
I'd done the H-bridge and the AMC to adapt to my cockpit.
But since the AMC works correctly, I'v got one issue with the h-bridge.
I works correctly with smalls dc motors, but when i attach the wipper motor to test, two mosfets are broken.
The power supply are 33A and it's start the wipper motor without problems when i attach the wiper motor directly to the power supply.
Can you help me?
Any ideas to look at?

This is my cockpit
[urlguest=]http://picasaweb.google.com/frantoledano/NuevoCockpit#[/urlguest]

And this is the parts of the x-simulator.
[urlguest=]http://picasaweb.google.com/frantoledano/BanquerXSim#[/urlguest]

King regards from Spain.

I try it without fan, only to try to start to test.
Thanks.

Your problem is too general. There is a whole list of problems that could cause that. Do you blow the transistors all the time? If so which transistors? Do you notice overheating?

Describe your problem better, provide as much information as you can otherwise we are not able to help.

It looks like something is shorted out or not connected properly.

What power supply do you use? Is it a switching power supply? Did you tried with a common car battery?

Are you mosfets labeled IRFZ44N ???

Regards,
Thanos

okis.
Yes, it's are switching power supply, i don´t try with battery car, but the power supply can start the motors instatly when directly connect to it.
Yes, IRZ44 are the ones I use.
A lot of overheating are generated and the motors turns his rotation so slowly.
I'l try to record a video to show that.
King regards!

Can you post a photo of the mosfets label? Its important!

There is difference between IRFZ44 and IRFZ44N !!!! You need the IRFZ44N ones!!!!!!

The ones without N are not able to fully turn on by the 5v logical system of the h-bridge!

Regards,
Thanos