Originally posted by Cherryman
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I got several nylon bolts and nuts and spacers, and will see if I can improve the method of holding the inner bell in time.
HOW TO MEASURE THE INPUT POWER?
So I plugged in my "kill-a-watt" meter, but I it seems it only goes down to 0.01 KW-hrs, that is, 10 watt-hours. I need better accuracy than that for this device, something like a watt-minute would be great. I don't trust multiplying V*I, because I is going to jump all over the place with bubbles and boiling. That is, the resistance of the device must be considered (IMO) variable.
Or, I could make it heat a much larger quantity of water, and that way get onto the "kill-a-watt" meter with enough significant precision. That's the best I can think of right now, short of integrating the power measured by a DSO...
Or, perhaps I could buy another kind of watt-hour meter --if it has better precision.
Ideas?
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