pwm with microcontroller 8051 for scr

Posted on Feb 4, 2014

This project is currently output two PWM signals but can be extended to many PWM signals very easy. The input to the microcontroller is 100HZ pulses as zero crossing. currently it is build for two channel DAC, the input at port1 and port2 of microcontroller is converted to 0 - 5v accordingly. But if it is desired to control the SCR, then OP-AMP ci

pwm with microcontroller 8051 for scr
Click here to download the full size of the above Circuit.

rcuit will be removed and optocoupler moc3020 will be used for interfacing SCR or triac. The code of program for PWM with microcontroller 8051 for SCR or triac power control is written c lanuage using keil compiler. The c-code for PWM is as follows.

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