+-10V Motor control

[sfink06]

Hi all,

I am looking for a way to control the speed of either a DC motor or a servo using a -10V to +10V analog voltage signal. This type of control seems to be pretty standard for industrial servo amplifiers, but I can't find a cheap one (to run hobbyist sized motors.)

 

[KeepItSimpleStupid]

Motor voltage and peak current would help.

This https://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_120539_-1 can be the start of the project. You would need an H bridge for direction control and a window comparitor around zero to pick the direction.

Not sure what your application is, but big OP amps are sometimes used.

 

[sfink06]

Thanks. Unfortunately I don't really want to sink the time time and into designing the amp. I found this:

**broken link removed**

but it is still over kill (I don't really have a strict motor requirement because its just for controller testing.) I don't want to spend more than 25 dollars, because I need 5 or them.