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Engineering
Electrical Engineering
Why this Simple Watt Meter for a 220 Volt Circuit works?
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[QUOTE="henriquevpp, post: 6340765, member: 677808"] [B]TL;DR Summary:[/B] Help with a wattmeter for 220V circuits that have only resistors. Hello guys! I'm just a begginer student. I found this circuit of a wattmeter that works only with resistors. Can someone explain to me how the 33k resistor give a voltage of 1 mV to 1 Watt? I did not understand why these resistor values has been chosen and why the it measures only in the 33k resistor. Link: [URL]https://everycircuit.com/circuit/5290189996163072/simple-watt-meter-for-220-volt-circuit[/URL] I made a version (only changing one resistor value) at Fasltad: [URL]http://tinyurl.com/y7uqu8n4[/URL] (the url was too big). Can someone help me? Thank you! [/QUOTE]
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Why this Simple Watt Meter for a 220 Volt Circuit works?
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