H bridge

[sayzer]

Wo wo wo,

It is possible to have speed control with relay, as I mostly do.

The Relay is for the direction, not for the speed.

IRFZ44 is for speed control.


When the relay is OFF, your motor terminals are connected with one direction, say CW.
When the relay is ON, your motor terminals are connected with the other direction, CCW.

In both cases, motor is not running.
You can turn the motor ON, OFF or control its speed via IRFZ44.

<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=2517&d=1208532602">

[Armadus]

Thanks for the new information. I think that this is a superior circuit compared to the mosfet bridge using 4 transistors to trigger the four mosfets. This circuit has the elegance of simplicity, which I think will also be more reliable. Just the info I am looking for.