An electrically conductive membrane is arranged in front of a metal plate. The membrane is mounted electrically insulated. The metal plate is electrically pre-charged. The so-called "freezing" of the electrical charge, also known as electrostatic polarization, is only possible with an electret foil. This is permanently applied to the metal plate. As a result, the membrane is sufficiently biased so that only a small voltage of around 1.5 V is required to generate a potential gradient and supply the FET field effect transistor with voltage. This FET then amplifies the power. When a sound hits the membrane, this leads to a change in capacitance between the membrane 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
