Home appliance Capacitor ?

[harry chickpea]

Interesting. Whenever I saw a scope of line voltage when I was growing up in my dad's shop it was dull in its consistency. Construction generator power, OTOH... I'd have thought the utility would have seen and corrected their issue. Am I correct that the harmonics created momentary overvoltage that might have been clipped had surge protection been used to protect the caps?

[mathjak107]

Originally Posted by harry chickpea

Interesting. Whenever I saw a scope of line voltage when I was growing up in my dad's shop it was dull in its consistency. Construction generator power, OTOH... I'd have thought the utility would have seen and corrected their issue. Am I correct that the harmonics created momentary overvoltage that might have been clipped had surge protection been used to protect the caps?

yes . when we saw the power quality testing results the disturbances created by the huge generators was off the hook . the resonances were awful

6 different pumps had the capacitors explode like a bomb went off .


https://www.ee.co.za/wp-content/uplo..._01_HowCap.pdf

[harry chickpea]

Heh! I guess when you play with an L C oscillator on line voltage, the results can be impressive. I followed, partly because of my music background, but the math to dissect it would be beyond me. Detuning rather than damping is cute. Rather than a brute force trying to stop it, the circuit instead suggests "Here, just go play quietly where you won't disturb the work being done." Funny.