12 volt motor controller
 

hi this is my first post to this group. im working on a project that is
going to use this gear motor or another that is very similar.
http://www.grainger.com/Grainger/pro...1777546&ccitem

what I would like it to do is go from 0 to full speed with a pot or use a
selector switch to have 6 preset speeds.
I have a pretty good understanding of electronics and can find my way around
a soldering iron. im just not sure about putting this all together.

thanks
Dominic

oh yea I need this to be powered from 120v ac.
"Dominic Palazzola" wrote in message
...
hi this is my first post to this group. im working on a project that is
going to use this gear motor or another that is very similar.
http://www.grainger.com/Grainger/pro...1777546&ccitem

what I would like it to do is go from 0 to full speed with a pot or use a
selector switch to have 6 preset speeds.
I have a pretty good understanding of electronics and can find my way
around a soldering iron. im just not sure about putting this all together.

thanks
Dominic

oh yea I need this to be powered from 120v ac.

Well, it's a 12 volt motor so you need a 120 VAC to 12 VDC power supply. If
you have a variable power supply (0 - 12 VDC), you can control the motor
speed with the power supply pot. The power supply needs to put out a couple
amps.

John Musselman

On Fri, 20 May 2005 16:37:29 -0700, "John Musselman"
wrote:


oh yea I need this to be powered from 120v ac.

Well, it's a 12 volt motor so you need a 120 VAC to 12 VDC power supply. If
you have a variable power supply (0 - 12 VDC), you can control the motor
speed with the power supply pot. The power supply needs to put out a couple
amps.

---
Ideally, it sould be pulse-width modulated so that it won't suffer
from low torque at low speed.

--
John Fields
Professional Circuit Designer

exactly! I guess I should have been more clear, what im looking for is a
design so I can build it.

Dom


"John Fields" wrote in message
...
On Fri, 20 May 2005 16:37:29 -0700, "John Musselman"
wrote:


oh yea I need this to be powered from 120v ac.

Well, it's a 12 volt motor so you need a 120 VAC to 12 VDC power supply.
If
you have a variable power supply (0 - 12 VDC), you can control the motor
speed with the power supply pot. The power supply needs to put out a
couple
amps.v

---
Ideally, it sould be pulse-width modulated so that it won't suffer
from low torque at low speed.

--
John Fields
Professional Circuit Designer