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Watt Hour Meter Circuits
Last Updated on: Thursday, October 30, 2014 09:22 AM


David A. Johnson's Circuit designs
  • Watt-Hour Meter Monitor:  This is a simple and safe way to monitor the power and energy use of a typical home.  A battery powered device is attached to the top of a typical spinning wheel type watt-hour meter.  The device contains a visible red LED and a PIN photo diode.  Light pulses are bounced off of the watt-hour meterís spinning wheel.  The circuit detects the black mark on the wheel and produces a clean TTL level logic signal, equal to the frequency of the wheel spin.  This information can be connected to a low power RF transmitter to send to a matching receiver, where the information can be recorded and displayed.


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

A Low Cost Watt-Hour Energy Meter Based on the ADE7757 -  AN-679 Analog Devices Application Notes  (app note added 2/06)
A Tamper-Resistant Watt-Hour Energy Meter -  AN-563 Analog Devices Application Notes....[App Note]Based on  ADE7751 and Two Current Sensors
A Tamper-Resistant Watt-Hour Energy Meter Based on the AD7751 -  AN-574 Analog Devices Application Notes....[App Note]With a Current Transformer and a Low Resistant Shunt
An Electronic Watt-Watt-Hour Meter -  National Semiconductor Application Note  (app note added 2/06)
AN220: Watt-Hour Meter using PIC16C923 & CS5460 -  Microchip Application Note Published 16-Oct-00  (app note added 2/06)
AN-265: An Electronic Watt-Watt-Hour Meter -  National Semiconductor Application Note  (app note added 2/06)
AN-559: A Low Cost Watt-Hour Energy Meter Based on the AD7755 Chinese Version-5/2000 -  AN-559 Analog Devices Application Notes....[App Note]
AN-679: A Low Cost Watt-Hour Energy Meter Based on the ADE7757 -  AN-679 Analog Devices Application Notes....[App Note]

Digital Wattmeter -  The extra input B is for a later SWR brigde project, also the TX serial output will be in use later. The uncalibrated signal response is: +1/-1 dB from 1MHz to 450MHz. Input SWR vill varry from 1.00 to 1.30, depending on input frequency. To make the SWR this good, you need to assemble the input circuit correct and adjust the capasitor. Input power range: -60 to +30dBm that is 1 nW to 1 Watt. Ö....
Low Cost Watt-Hour Energy Meter Based on the AD7755 Chinese Version-5/2000 -  AN-559 Analog Devices Application Notes  (app note added 2/06)
Low Cost Watt-Hour Energy Meter Based on the ADE7757 -  AN-679 Analog Devices Application Notes  (app note added 2/06)
Tamper-Resistant Watt-Hour Energy Meter -  AN-563 Analog Devices Application Notes....[App Note]Based on  ADE7751 and Two Current Sensors
Tamper-Resistant Watt-Hour Energy Meter Based on the AD7751 -  AN-574 Analog Devices Application Notes....[App Note]With a Current Transformer and a Low Resistant Shunt
Watt Meter, Measures True RMS Watts -  Measure All your AC Household Appliances....(design added 10/06)
Watt-Hour Meter Monitor -  This is a simple and safe way to monitor the power and energy use of a typical home.  A battery powered device is attached to the top of a typical spinning wheel type watt-hour meter.  The device contains a visible red LED and a PIN photo diode.  Light pulses are bounced off of the watt-hour meterís spinning wheel.  The circuit detects the black mark on the wheel and produces a clean TTL level logic signal, equal to the frequency of the wheel spin. This information can be connected to a low power RF transmitter to send to a matching receiver, where the information can be recorded and displayed. Ö. [Hobby Corner Circuit by Dave Johnson]
Watt-Hour Meter using PIC16C923 & CS5460 -  Microchip Application Note Published 16-Oct-00  (app note added 2/06)
Wattmeter -  The extra input B is for a later SWR brigde project, also the TX serial output will be in use later. The uncalibrated signal response is: +1/-1 dB from 1MHz to 450MHz. Input SWR vill varry from 1.00 to 1.30, depending on input frequency. To make the SWR this good, you need to assemble the input circuit correct and adjust the capasitor. Input power range: -60 to +30dBm that is 1 nW to 1 Watt. Ö....

Watt Hour Meter Circuits


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