Dear All.
I am detailed to control a small single phase 220VAC 50Hz Motor by pulse width modulation circuit and using an optoisolator Triac Driver.
I have designed a pulse width modulation circuit by using LM3900 Op Amp and MOC3083 Optoisolator (with zero crossing) for Triac driver.
This circuit is malfunctioning as the motor is jumping and taking jerks in rotation.
I think that frequency of pulse modulation circuit which is input of optoisolator is wrong.
When I checked it by oscilloscope the frequency was about 1khz, then I adjusted it to 50hz but the problem is same.
Can any body help me to advise the exact frequency of this circuit for triggering of Triac. Thanks
I am detailed to control a small single phase 220VAC 50Hz Motor by pulse width modulation circuit and using an optoisolator Triac Driver.
I have designed a pulse width modulation circuit by using LM3900 Op Amp and MOC3083 Optoisolator (with zero crossing) for Triac driver.
This circuit is malfunctioning as the motor is jumping and taking jerks in rotation.
I think that frequency of pulse modulation circuit which is input of optoisolator is wrong.
When I checked it by oscilloscope the frequency was about 1khz, then I adjusted it to 50hz but the problem is same.
Can any body help me to advise the exact frequency of this circuit for triggering of Triac. Thanks