Microphones ECM

An electrically conductive membrane is arranged in front of a metal plate. The diaphragm is mounted so that it is electrically insulated. The metal plate is electrically pre-charged. The so-called "freezing" of the electrical charge, which is also referred to as electrostatic polarization, has only become possible with an electret film. This is permanently applied to the metal plate. As a result, the diaphragm is sufficiently biased so that only a small voltage of about 1.5V is necessary to generate a potential gradient and to supply the FET field effect transistor with voltage. This FET then amplifies the power. If a sound hits the diaphragm, this leads to a change in capacitance between the diaphragm and the metal plate. These capacitance fluctuations can then be measured as a voltage fluctuation at the output.

Diameter (mm): 3
Height (mm): 1.5
Sensitivity (-dB): -40 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 100 - 10000
Diameter (mm): 4
Height (mm): 1.5
Sensitivity (-dB): -40 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 100 - 10000
Diameter (mm): 6
Height (mm): 2.7
Sensitivity (-dB): -38 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 50 - 16000
Diameter (mm): 8
Height (mm): 5
Sensitivity (-dB): -38 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 50 - 16000
Diameter (mm): 9.7
Height (mm): 4.5
Sensitivity (-dB): -36 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 50 - 16000
Diameter (mm): 9.7
Height (mm): 5
Sensitivity (-dB): -36 - -50
Rated Voltage (V): 1.5 - 4.5
S/N Ratio (dB): >60
Max Current Consumption (mA): 0.5
Frequency Range (fo-Hz): 50 - 16000
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