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Activity for Spamalot‭

Type On... Excerpt Status Date
Edit Post #291478 Initial revision 7 months ago
Answer A: Power Line Filter. Location of Cy and common mode choke.
One additional wrinkle not (at present) mentioned is that Class X and Class Y capacitors are used in those specific locations for safety reasons, having to do with the capacitors being connected directly to the line supply. Class X capacitors are rated for the use shown - across the line. If they ...
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7 months ago
Comment Post #291383 How Energy Meters Do It? is going to vary. The cheap ones assume a sine wave (results on a MSW inverter may be surprising) and (likely) count frequency (or rather period, and derive frequency from that) on zero crossings. The expensive ones tend to look at the actual waveform and compute the actu...
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7 months ago