Dc motor speed control 2


Posted on Apr 20, 2012

Power op amps provide accurate speed control for dc motors. The circuit provides bidirectional speed control. The amplifiers' push-pull configuration ensures a full rail-to-rail voltage swing (minus the output stages' saturation drops) across the motor in either direction. The circuit uses a mechanically-coupled tachometer to provide speed-stabilizing feedback to the first amplifier section. The motor's speed and direction of rotation is set by adjusting the 10 k ohm potentiometer at the amplifier's noninverting input. The RFCF feedback network prevents oscillation by compensating for the inherent dynamic mechanical lag of the motor.


Dc motor speed control 2
Click here to download the full size of the above Circuit.

Select the RFCF time constant to match the particular motor's characteristics.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

80W power amplifier MJ3001 and MJ2501
pest repellent circuit
Auto gain Control op-ampCircuit
mobile incoming call indicator
Ni-MH battery charger using LT4060
mixer circuits
Modular Preamplifier Switching Center
Practical Method for Production of Water Fuel with Piezoelectric
Misc RF Topics



Top