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024 3831 7421
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Power modules
Power modules

Power modules

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Hoang Quoc Co.,Ltd
Add:  No.7, Lot 5B, Trung Yen New, Cau Giay District, Hanoi City, Vietnam 
ĐT      : (84-4)   3831 7421
Fax    : (84-4)  3831 7433
Email : Hoangquoc@hoangquoc.com
 Why a Power Module?

An externally polarized condenser measurement microphone cannot work on its own.  It needs to be connected to hardware that can act as an interface between the raw signal output and the data acquisition unit or measurement device. The Power Module is such an interface that improves the performance and reliability of the measurement chain.

  • It provides polarization voltage for the transducer, ensuring that the microphone gets the charging voltage it needs.
  • It provides supply voltage for the microphone preamplifier. The preamplifier acts as a unity gain impedance converter. It provides a certain amount of line drive capability by providing a low output impedance and output current,  making it possible to transmit the signal from the transducer to the Power Module without significant degradation.
  • A power module can provide amplification or attenuation to the signal, thus making it possible to fine tune the measurement chain to the signals being measured and the  hardware being used.
  • Selectable filters make it possible to exclude unwanted noise from the measurement, e.g. wind induced noise from outdoor measurements.
  • Overload detection makes it possible to validate the measurements and is a useful tool in monitoring setups.
  • When a Power Module with gain is used, you can use longer cables because of the power module's ability to deliver current.
  • A Power module introduces electrical isolation
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