dc motor and v regulator - Electronic Circuits Projects Diagrams Free

svtiss · 9th March 2006, 03:45 PM

I have a Dc 24v motor and I need 3 speeds for the motor
Can I just use a voltage regulator and change voltage for the motor , or better to use PWM Driver ? and why ?
Thanks

**Nigel Goodwin** · 9th March 2006, 03:55 PM

Quote:

Originally Posted by svtiss

I have a Dc 24v motor and I need 3 speeds for the motor
Can I just use a voltage regulator and change voltage for the motor , or better to use PWM Driver ? and why ?
Thanks

Better to use PWM, it's FAR more efficient, and it provides better torque at low speeds.

svtiss · 9th March 2006, 04:08 PM

thanks
if I use SWITCHER Voltage Regulator , can it work ?

**Nigel Goodwin** · 9th March 2006, 05:15 PM

Quote:

Originally Posted by svtiss

thanks
if I use SWITCHER Voltage Regulator , can it work ?

Yes, but that's a voltage regulator, and NOT PWM.

Dean Huster · 10th March 2006, 12:37 AM

Most voltage regulators, whether linear- or switcher-based, have current limit protection which will interfere with a motor's high inrush current upon starting. Some regulators will go into current foldback and not recover without removing power. As stated, PWM is the way to go. You'll still have to look at the maximum current the PWM circuit is capable of if you want full starting toque on the motor.

Dean

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9th March 2006, 03:45 PM	(permalink)
svtiss	dc motor and v regulator I have a Dc 24v motor and I need 3 speeds for the motor Can I just use a voltage regulator and change voltage for the motor , or better to use PWM Driver ? and why ? Thanks

9th March 2006, 04:08 PM	(permalink)
svtiss	thanks if I use SWITCHER Voltage Regulator , can it work ?

10th March 2006, 12:37 AM	(permalink)
Dean Huster	Most voltage regulators, whether linear- or switcher-based, have current limit protection which will interfere with a motor's high inrush current upon starting. Some regulators will go into current foldback and not recover without removing power. As stated, PWM is the way to go. You'll still have to look at the maximum current the PWM circuit is capable of if you want full starting toque on the motor. Dean __________________ Dean Huster, Electronics Curmudgeon Contributing Editor emeritus, "Q & A", of the former "Poptronics" magazine (formerly "Popular Electronics" and "Electronics Now" magazines). R.I.P.