Re: Testing encoders on the "bench"

Hi,
For a simple circuit where you can actually see the encoders
counting in binary with LEDs, look at:
http://www.usdigital.com/products/ls7183-ls7184/
The chip(ls7183) will take quadrature from the encoder and drive a
counter chip. You could use the output of the counter chip to drive
LEDs. I ?think? the 74193 type counter shown in the schematic will
source enough current to drive LEDS through some resistors.

Jeff


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "mueller914"
<mueller914@y...> wrote:

> Hello all,
>
> I was given a bunch of Pittman motors (DC brush) that have built-in
> encoders(500CPR)
>
> The problem is some of them "might" have bad encoders, so how could

I

> test them on my work bench? Is there a simple circut I can build

and

> plug into the motor harness to check that the encoder is working
> correctly?
>
> something like, LEDs that'll turn on and off or speed up or slow

down

> when the motor is activated and speed up or slowed down?
>
> thanks,