Re: [CAD_CAM_EDM_DRO] 555 step generator

Alan,

Thanks for the link.

> I posted a 555 pulse generator circuit in files 555 drive 2:
>
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/555drive2.jpg
>
> It was used to drive the three axis of a computer driven water phantom
> (Xrays) in manual mode, hence the 6 switches. Calls for 15V, but the
> 12V Zener parts could be pulled out.

My end goal is to have a box with a knob on it. Inside will be a power
supply, gecko or other stepper controller, and the circuit. I'll need
to be able to control the motor from a dead stop to maybe 75rpm. This
will be connected to a motor that will be turning a rotary table which
will be on a polishing machine.

So, the circuit will need to output square pulses of a certain width
with control over the time between the pulses. Output should be 5V
logic. I've got some old drawings I did somewhere around here. I'll
dig through my notes and see if they still make sense and post something
to the files are if they do.

I'd like to use the same circuit for bench testing. Every once in a
while I end up with a few industrial step/direction controllers and it
would be nice to test them without tearing my machine apart.

Before this gets too off-topic...

Chris