does the output voltage from a microphone vary according to the decibel of sound i/p ? does it vary with the size of diaphragm? ,what is the typical output voltage from a microphone ? will it be anough to power a device? pls give me the link
2007-08-11 23:56:05 · 2 answers · asked by jeeva_somasundaram 2 in Science & Mathematics ➔ Engineering
Most dynamic and condenser microphones produce anywhere from a few microvolts to a few millivolts depending on the applied sound pressure. Some "Crystal" microphones can produce about 1 volt under normal sound pressure levels, but they require a very high impedance amplifier. If the crystal element is 'loaded' the voltage output drops.
Larger diaphrams on dynamic and condenser microphones would be more sensitive to sound pressure, but with a loss in high frequency response.
I don't know of any microphone that would produce enough useful power for any normal "device".
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2007-08-13 05:42:15 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋
The amount of (power) coming from a microphone varies greatly depending on how loud the the sound is entering. And the size of the diaphram does matter because the bigger the diaphram the bigger the magnet . And the bigger the magnet moving between the copper coils produces more energy.
2007-08-12 00:10:10 · answer #2 · answered by r0bert38 2 · 2⤊ 0⤋