Jerry wrote: Trust me, they try this at work all the time, running transformers off triac based dimmers.
I'm not running the transformer off the triac. I'm asking about running a capacitor off of a triac-chopped sinusoid
Jerry wrote: Trust me, they try this at work all the time, running transformers off triac based dimmers.
Doug Coulter wrote:Of course, to see the current waveform, you might have to float your scope off ground or you'll fry it.
Doug Coulter wrote: don't complain it doesn't work for you either unless that motivates you to fix it yourself and enlighten us all on why we've all wasted millions if not billions of dollars world wide NOT doing this for power supply design - because it's too hard to make it work right.
Doug Coulter wrote:Since that RC is integrating whatever shows up between the input and output terminals of the dimmer, any change in that waveform will change the on-time...so it's practically impossible to "regulate" that unless you come up with a from-scratch driver for the gate to main terminal signal (probably need to send pulses transformer coupled, off a separate AC reference with variable phase delay to get it constant).
Doug Coulter wrote:You know you can't turn off a triac or SCR once it's on
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