Re: Motor Circuit

Hi Jon,

Sorry, I didnt notice any other posts. I know it's "antiquated"
but I have piles of all kinds of transistors (a friend closed
an electronics repair place). The idea is to learn about the
feedback it supposedly does. I always get my bearings better on
a basic simple design like this. Once I understand what's happening
most other circuits make more sense. I have a nice cross-ref
catalog and have had good sucess with substituting better
components. I just thought other DIY'ers would find it an
interesting example. Something to learn with. I Guess not.

Need any "obsolete" parts?

John

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:
>
> John Hansford wrote:
>
> >Hi Jon,
> >
> >Yes, for a small DC motor, or universal. Hobby-type stuff.
> >Is the circuit any use for that?
> >
> I'm pretty sure this sircuit can not be used for a universal motor.
> Anyway, it is a 12 V circuit, and it would require a total redesign to
> work on a 120 V DC motor. It would make a lot of sense to use IC's
> instead of the 1960's technology all discrete transistor design.
>
> >What's the OP?
> >
> >
> >
> Original Post, or Original Poster. From a couple days ago.
>
> Jon
>