OpenEnergyMonitor
  • System Overview
  • Resources
  • Troubleshooting

Main System:

  • emonPi2
  • emonTx5
  • emonTx4
  • emonTH2
  • emonBase

Older Hardware:

  • emonTx3
  • emonPi1

Integrations

  • EmonEVSE

Software:

  • emonSD
  • emonHub
  • emonCMS

Applications:

  • Home Energy
  • Solar PV
  • Heat pump

Learn:

  • Electricity Monitoring
    • AC Power Theory
    • CT Sensors
    • Voltage Sensing
      • Measuring AC Voltage with an AC to AC power adapter
      • Different AC-AC Power Adapters
      • Ideal Power 9V AC-AC Adaptor (Voltage Transformer)
      • Mascot 9 V AC/AC Adaptor (Voltage Transformer)
      • Why Can’t I Use a Single Transformer?
      • How to take component tolerances into account
    • Current and Voltage
    • Networking
    • Pulse Counting
    • Temperature
    • Using the Arduino IDE
    • Using PlatformIO
    • Programmers
  • Heat pumps
  • Sustainable Energy
  • PV Diversion
OpenEnergyMonitor
  • Learn: Electricity Monitoring
  • Voltage Sensing
  • Edit on GitHub

Voltage Sensing

  • Measuring AC Voltage with an AC to AC power adapter
    • Arduino sketch
    • Improving the quality of the bias source
    • Notes on Mains Voltage Limits
  • Different AC-AC Power Adapters
    • AC to AC Power Adapters
    • MW (UK plug)
    • Strontronics (UK plug)
    • Mascot 9580 (UK plug)
    • FP AD 3515 (euro plug)
    • TDC
  • Ideal Power 9V AC-AC Adaptor (Voltage Transformer)
    • Synopsis
    • Test Rig
    • WARNING
    • Winding Phase
    • Tests
    • Conclusions
    • Appendix
  • Mascot 9 V AC/AC Adaptor (Voltage Transformer)
    • Synopsis
    • Test Rig
    • WARNING
    • Tests
    • Conclusions
    • Postscript
    • Appendix
  • Why Can’t I Use a Single Transformer?
  • How to take component tolerances into account
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