roiberts
Junior Member level 1
Dear Forum
Now, for regulating the power in owr load, we use a Triac turned ON after some msec from the zero cross of a 220V-50HZ power supply..
So,we create 2 slices ,opposidet sign, each 10msec (50 HZ ).
This bring us to EMI problem, beetwen 150K and 2MHZ.
Question is: could be better to subdivide the sine wave in more slices, using a GTO, with PWM of some MHZ, so, moving the spectral contents more in HF ?
Maybe in this way we can avoid a bigger EMI filter at circuit input.
Any suggestion are nice.
Thanks very much
Roberto
Now, for regulating the power in owr load, we use a Triac turned ON after some msec from the zero cross of a 220V-50HZ power supply..
So,we create 2 slices ,opposidet sign, each 10msec (50 HZ ).
This bring us to EMI problem, beetwen 150K and 2MHZ.
Question is: could be better to subdivide the sine wave in more slices, using a GTO, with PWM of some MHZ, so, moving the spectral contents more in HF ?
Maybe in this way we can avoid a bigger EMI filter at circuit input.
Any suggestion are nice.
Thanks very much
Roberto