dc motor speed conrol

Status
Not open for further replies.
V

venuselectronics

Member level 2
Joined
Mar 23, 2010
Messages
52
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Location
india
Activity points
1,648
i am doing one project , for speed control of dc motor. i know that ,if we give

pwm signal between mosfet gate and source, than conduction of mosfet

will vary, that will vary the speed of dc motor,

does any body have proven design of pwm generator, and further if i want to

forward reverse this dc motor, what is additional circuit

venus electronics
 

A typical PWM circuit consist of a triangle wave generator followed by a comparator. By varying the compared voltage on the comparator, you'll make it a pmw output generator.
 

There are millions of sites on the web that show how to use pwm generated by for example 555-timer to control a speed of a dc motor ..
Here is just one example:
**broken link removed**

If you want to change direction on top of the speed control you have to use bridge configuration and switch the polarity of the voltage by, for example, relays, or mostets, or BJTs ..
See this example:
**broken link removed**

IanP
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…