Speed regulator for dc motors


Posted on Oct 13, 2012

A four thyristor controlled bridge is used for operation in two quadrants of the torque-speed characteristics. In the trigger circuits the usual pulse transformers were replaced by self biased circuits which minimize gate power consumption and increase noise immunity. Electrical isolation is guaranteed by the use of optocouplers. The trigger pulses are generated by the comparison between an error signal, previously processed and amplified, and a line synchronism signal.


Speed regulator for dc motors
Click here to download the full size of the above Circuit.

The converter's output is a dc voltage proportional to the speed, which after being compared with a reference signal, becomes the error signal.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

flyback with a pulsed DC signal
Audio CD4001 based on Car Alarm Circuit
high current mosfet toggle switch
four channel oscilloscope
Subwoofer filter



Top