A lot of homes are equipped with dimmers instead of switches to control the lighting. These devices are based on silicon-ron trolled rectifiers (SORs) tliat cut the ac sine wave off over part of its cycle, producing a harmonic-rich sharp waveform. These devices can produce a sound described as frying eggs" well into the shortwave spectrum. Diagnosis is simple: turn off the light. If the noise stops when the light is turned off, then the dimmer is at fauji. Although it is possible to install LC line noise filters at the dimmer, that approach is not usually feasible. \\ would be better to (a) remove the dimmer and replace it with an on/off switch, (b) replace the dimmer with a special model that is designed to suppress radio noise, or (r) keep the light turned off when using the receiver.
Was this article helpful?
Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.