I am interested in measuring electric field generated by household appliances. I know the magnetic field is easy to measure but I don't have any idea how to measure electric field. I think I need a special type of probe. Can anyone point me to some good resources on the web?
Electric fields generated around household appliances are normally very weak. An exception is a CRT based TV that has such a strong field around it that you can easily get shocks by just tuching the screen.
There are tools that do mesure the electric field around a charged object. They are called: Electrometer or Electric field meter.
Most electrometers are based on a component called FET (Field effect transistor).
Here is a small charge detector project for you with plenty of information about how it works:
There are also a lots of other interesting articles to read about electricity here:
----- Original Message ----- From: "Ben Fok" Newsgroups: alt.engineering.electrical Sent: Saturday, January 03, 2004 6:10 AM Subject: How to measure electric field