speed controler circuit for a newbie

R

russdana

New Member

• Jul 8, 2004

• #1

I am after a circuit diagram for a speed controler circuit for use with a motor.

I'm looking for a few different ones so any help would be greatly recieved
thanks.

 

chemelec

Well-Known Member

• Jul 8, 2004

• #2

It would help a lot if you said what kind of motor.

The Control of different types of motors are Totally Different types of controls.

Gary

 

E

elfvenlord

New Member

• Jul 8, 2004

• #3

Hi

Attached is a simple speed control that uses either a 555 or 7555 IC.
The IC can only operate at a max of 200ma, so if your motor draws more than that maybe you could use a transistor switch-Im not sure.But if your motor draws less than 200ma then this circuit should do the job.
Hope it helps. :wink:

 

Attachments

• motor_speed_control.jpg

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Styx

Active Member

• Jul 8, 2004

• #4

unfortunatly that cct will not control the speed. For true speed controll you need speed feedback and a closeloop system the "error" of the demand and the speed feedback then can be used to drive something like the 555 cct above

 

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elfvenlord

New Member

• Jul 8, 2004

• #5

Thanks styx

I see what you mean.This is just a basic speed control circuit that I found out of a book.Its not the best design for true speed I must admit.