dc motor driver - Electronic Circuits Projects Diagrams Free

jim bro · 2nd April 2003, 05:10 PM

hello,
I want to drive a dc motor (speed and direction) and i use the L272 dual power operational amplifier.Is the input voltage level of this op-amp compatible with any D/A converter?

Scubasteve · 7th April 2003, 06:14 AM

Hey,

You need to be more specific.. You want to control the motor with a D/A converter? This isn't a great way to do this..

I would use an 8-bit PWM modulator with a simple H-bridge, then all you would need is the 8-bits for speed and a single bit for direction.

Controlling anything linear like this is a waste of power and generates a ton of heat usually.. Use PWM

Steve

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2nd April 2003, 05:10 PM	(permalink)
jim bro	dc motor driver hello, I want to drive a dc motor (speed and direction) and i use the L272 dual power operational amplifier.Is the input voltage level of this op-amp compatible with any D/A converter?

7th April 2003, 06:14 AM	(permalink)
Scubasteve	Hey, You need to be more specific.. You want to control the motor with a D/A converter? This isn't a great way to do this.. I would use an 8-bit PWM modulator with a simple H-bridge, then all you would need is the 8-bits for speed and a single bit for direction. Controlling anything linear like this is a waste of power and generates a ton of heat usually.. Use PWM Steve