EEVblog 1446 - Analog Watt Hour Meters are AMAZING!

Analog Watt Hour energy meters are fascinating! How they work, teardown, and experiments. Thanks to Max Button for sending this in to the mailbag. 00:00 - Watt Hour Energy Meters 02:11 - Teardown 05:13 - What’s to stop it taking off? 06:40 - Does it work? Testing with a load. 07:24 - Can you get free electicity with a neodymium magnet? 08:14 - Timelapse of no load creepage 08:49 - Anti creep holes 10:45 - When this baby hits 88 MPH you’re gonna see some serious spin! 19:06 - Theory of Operation 24:00 - Interesting Design - Jewel bearings 25:07 - Interesting Design - Magnetic temperature compensation 26:58 - Interesting Design - Full load compensation 27:40 - Interesting Design - Dimples This is how serious they take their metering: This model meter was cancelled from use in 2012: Forum: