| "Mitigation of Electrical Pollution in the Home" by Professor Martin Graham |
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In"Mitigation of Electrical Pollution in the Home" by Professor Martin Graham dated 19 April 2002, Professor Emeritus at University of California in Berkeley Dr. Martin Graham discusses how people can cheaply and easily do an initial measurement to identify whether they are exposed to electrical pollution, as well as, a safe easy way to mitigate the problem once it is identified. An inexpensive hand held AM radio can be used to make preliminary measurements to detect electrical pollution. Each filter is made from a 20µf motor run A.C. dry film capacitor with a bleeder resistor (for safety) and a properly attached cord. (The A.C. dry film capacitor used in the initial test filters was the Panasonic JSU18X206AQD.) Approximately 20 such filters are needed to reduce exposure to electrical pollution in the home. These filters have advantages over previous filters in that they are small, portable (They plug into any outlet.), have a higher frequency range, and any person who knows how to plug in an electrical cord can install them. Assembled units are available from Stetzer Electric, Inc. They can be reached by phone at (608) 989-2571 or by email at Dave@stetzerelectric.com Dr. Graham provided pictures of spectra of electrical pollution from a spectrum analyzer. |
| "A Microsurge Meter for Electrical Pollution Research" by Professor Martin Graham |
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In "A Microsurge Meter for Electrical Pollution Research" by Professor Martin Graham dated 19 February 2003, Professor Emeritus at University of California in Berkeley Dr. Martin Graham discusses an inexpensive peak to peak meter that can be used for preliminary electrical pollution measurements to detect high frequency voltage peaks. It is very useful for detecting power surges such as those caused by dimmer switches and variable speed motors. The filter removes the 60 Hz signal and measures the peak to peak values for the "dirty" power signal that remains. Assembled units will be available from Stetzer Electric, Inc. They can be reached by phone at (608) 989-2571 or by email at Dave@stetzerelectric.com |
| "A Ubiquitous Pollutant" by Professor Martin Graham |
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"A Ubiquitous Pollutant" by Professor Martin Graham details an instrument that plugs into regular outlets and measures the high frequencies present on the electrical wires. If you use the filter outlined in the paper with the Fluke 79 III, keep in mind that it only measures frequencies up to 20 kHz. It is probable that there are frequencies higher than that present on the line that that meter will not be able to read. The frequency window can be expanded by using another rms meter meeting the other requirements that has a greater frequency window. The filter can also be used with an oscilloscope (again be aware of the frequency limitations of the instrument).
You can use this meter to see if there is a correlation between the times you experience the symptoms described in the Radio Wave Sickness symptoms list and changes in your electrical environment. If you know you feel worse in some places than others, this meter can help you determine whether it is related to the electrical environment. Assembled filters are available from Stetzer Electric, Inc. They can be reached by phone at (608) 989-2571 or by email at Dave@stetzerelectric.com. (You would still need to have or purchase a meter that meets or exceeds the specifications in "A Ubiquitous Pollutant".) |
| High Frequency Filters |
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Schematic for high frequency filter available from Stetzer Electric Schematic for an high frequency filter that plugs into a 240 volt outlet installed at the electrical service box. |