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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

energy monitoring

  1. A

    3 phase 3 wire measurement

    Dear all, I am trying to build 3 phase voltmeter that could measure L-L and L-N voltage during 3 phase 3 wire and 3 phase 4 wire connection. 3 phase 3 wire and 3 phase 4 wire connection are external connection. as we know in 3 phase 4 wire we will get neutral reference so we can get...
  2. chrischris

    detecting on off state of any appliance using a CT sensor

    Hi, I am trying to detect any appliance being turned off or on. I am using SCT013-30 (30A/1V) sensor with 62 ohm burden resistor built in. If I measure the AC voltage with just the sensor (not connected to my circuit, I get 30mV for off and 340mV for on. As soon as I connect the circuit to PIC...

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