saps
Hazard to Self
Posts: 82
Registered: 7-3-2005
Location: New Britian
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Mood: disgruntled
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electrostatic speakers
how do static speakers such as this one: [electronics.howstuffworks.com] accumulate static charge
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Lambda
National Hazard
Posts: 566
Registered: 15-4-2005
Location: Netherlands
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Mood: Euforic Online
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Saps, they are based on the static electricity principle (charges attracting or repelling each other) of a charged (immobile) central membrane (at a
fixed high voltage). The membrane that produces audio motion (mobile) is made of a ultralight metalized (electricity conducting) membrane. This
ultralight membrane is charged by the altenating audio signal. The output signal of an audio amplifier is fairly low in voltage (except valve
amplifiers before the output transformer), this signal is stept-up by modulating a transformer (with the audio signal) which has a large step-up
voltage ratio. A valve amplifier has to do the opposite, for the output voltage is the result of a step-down transformer.
How to Make Electrostatic Loudspeakers:
http://www.amasci.com/esloud/eslhwto.html
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