h bridge for 12-24 volt motor 10-20 amp

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Any australian sources?

Jaycar sales staff didn't even know what a h bridge was.

JC


Re: h bridge for 12-24 volt motor 10-20 amp


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This sort of thing is usually assembled from parts.

Esaiest way is with SPDT relays but may not suit your application.


Re: h bridge for 12-24 volt motor 10-20 amp



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Oakley?


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10-20Amps in anything is not something they normally stock.

you would have to go to a stockist of the item that you are building.



Re: h bridge for 12-24 volt motor 10-20 amp


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http://www.robotparts.com.au/md03.htm

Overseas
http://www.robotshop.com/motor-controllers.html

Re: h bridge for 12-24 volt motor 10-20 amp



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Hi

Just a couple of questions for you...

What do you need it to do? ie. do you require overcurrent shutdown, soft
start/stop, regen braking, position control etc...... or just a basic
h-bridge and you will implement required features yourself?

How many units do you require?

Regards
James





Re: h bridge for 12-24 volt motor 10-20 amp


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It is a robot base and at the moment
I am using two relays for each motor.
One to connect and disconnect the
motor and the other to reverse the
battery polarity. The relays are
controlled via a computer. I would
like finer control as the base jumps
into action and stops with a jerk.
I am using a K8055 interface board.

I have a basic understanding of analog
and digital electronics and will most
likely end up building my own h-bridge
using mosfets but thought I should try
first for a possible Australian source
of a ready built product in case the
price was reasonable.

Thanks to everyone for your responses.

Regards,
John




Re: h bridge for 12-24 volt motor 10-20 amp



Quoted text here. Click to load it

It is a robot base and at the moment
I am using two relays for each motor.
One to connect and disconnect the
motor and the other to reverse the
battery polarity. The relays are
controlled via a computer. I would
like finer control as the base jumps
into action and stops with a jerk.
I am using a K8055 interface board.

I have a basic understanding of analog
and digital electronics and will most
likely end up building my own h-bridge
using mosfets but thought I should try
first for a possible Australian source
of a ready built product in case the
price was reasonable.

Thanks to everyone for your responses.

Regards,
John

RS Components have a good range of MOSFET drivers, whch include half-bridge
drivers in DIP-8 packages. They can drive N-channel power FETS directly, and
allow the top device to be supplied from quite high voltages (up to hundreds
IIRC). They also handle the switchover correctly so oyu don't get transient
shorts across the rails and consequent transient problems.

I bought a few a while back for a power square wave driver, the pricess were
surprisingly reasonable for a small quantity.



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