h bridge
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I'm looking for schematics about h bridges. Can you help-me?
Thanks!
Fabiano Bovo, from Brazil.
_____________________________________________________________
http://www.zipmail.com.br O e-mail que vai aonde voc
Thanks!
Fabiano Bovo, from Brazil.
_____________________________________________________________
http://www.zipmail.com.br O e-mail que vai aonde voc
Comments
>I'm looking for schematics about h bridges. Can you help-me?
>Thanks!
>Fabiano Bovo, from Brazil.
>_____________________________________________________________
>http://www.zipmail.com.br O e-mail que vai aonde voc
know that www.beam-online.com has a circuit or two for a 6 transistor
H-Bridge. Maybe I'll get around to doing an article on it. Have you seen the
new webpage? www.gorobotics.net
-William
Original Message
From: Fabiano Bovo <robotica@z...>
To: <basicstamps@egroups.com>
Sent: Saturday, May 20, 2000 2:17 AM
Subject: [noparse][[/noparse]basicstamps] h bridge
I'm looking for schematics about h bridges. Can you help-me?
Thanks!
Fabiano Bovo, from Brazil.
_____________________________________________________________
http://www.zipmail.com.br O e-mail que vai aonde voc
An H bridge is very simple, though somewhat difficult to show over email.
You need 4 transistors, and an inverter. Depending on the motor you may need
current limiting resistors.
1. You have your input for direction - tie this to the base of two
transistors.
2. Tie the collector of one of these to Vcc and the emitter to the positive
side of the motor for forward operation.
3. Tie the collector of the other to the negative side of the motor for
forward operation and the emitter to ground.
4. Now, also connect your input for direction to an inverter. Run the output
of that inverter to the base of the remaining two transistors.
2. Tie the collector of one of these to Vcc and the emitter to the positive
side of the motor for reverse operation.
3. Tie the collector of the other to the negative side of the motor for
reverse operation and the emitter to ground.
I'd try ASCII Art but I use a proportional font and I suspect you do too.
I also assume you use NPN transistors.
So:
Transistor 1: Base to Input, Collector to Vcc, Emitter to + on motor.
Transistor 2: Base to Input, Collector to - on motor, Emitter to Ground.
Inverter: Input to Direction Input, Output to Transistor 3 & 4's base.
Transistor 3: Base to Inverter Output, Collector to Ground, Emitter to +
on motor.
Transistor 4: Base to Inverter Output, Collector to - on motor, Emitter
to Vcc.
Where + and - are both for forward operation.
Hopefully this will help you.
http://www.cadvision.com/blanchas/hexfet/
http://www.us-epanorama.net/motorcontrol.html
ACJacques
Fabiano Bovo wrote:
>
> I'm looking for schematics about h bridges. Can you help-me?
>
> Thanks!
>
> Fabiano Bovo, from Brazil.
> _____________________________________________________________
> http://www.zipmail.com.br O e-mail que vai aonde voc
circuits, go to the links in this guy's web site.
the explanations are excellent with a little humor (fuse test mode) and very
elegant and simple diagrams.
if one of these doesn't work for you, your probably in the wrong
(hobby/business).
no offense intended, but this is really good stuff.
Norm & Monda
Cozy MK IV #202
Ford V-6 Powered
Original Message
From: "A.C.Jacques" <acjacques@i...>
To: <basicstamps@egroups.com>
Sent: Saturday, May 20, 2000 1:37 PM
Subject: Re: [noparse][[/noparse]basicstamps] h bridge
> Two very good links:
>
> http://www.cadvision.com/blanchas/hexfet/
>
> http://www.us-epanorama.net/motorcontrol.html
>
> ACJacques
>
>
> Fabiano Bovo wrote:
> >
> > I'm looking for schematics about h bridges. Can you help-me?
> >
> > Thanks!
> >
> > Fabiano Bovo, from Brazil.
> > _____________________________________________________________
> > http://www.zipmail.com.br O e-mail que vai aonde voc