Microphone -  preamplifier    ED 30

  Audio  -  preamplifier   

This amplifier is designed to boost the microphone level from various microphones to the level which is suitable for transceiver and sound card line level input.

Modul performance:
Amplification 40 dB, flat frequency response from 150 Hz to 10 kHz, quite low distortion performance figures.

Level control range: 40 dB amplification for dynamic microphone and electret microphone.

in SMD modul technic

A strong and well modulated transmitter signal is easier, better  and  easier to hear,  increases the performance of the transceiver and creates a listening experience.

Application
Connection sample

Technical details:
Superflat: only  3,5 mm
Supersmall: only  13 x 42 mm (B-T)
Frequencyrange: 150 Hz--10 kHz
Powersupply: 5--16V/DC
Powercurrent:  ca. 1.5 mA
Gain: > 40 dB, 5 mV-- 5 V / 1 kOhm

Levelcontrol with two resistor adjusters.
Fastening with glue strip

ED 236 with dynamik-compressor

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... now you can  build this SMD modul into the microphones

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The input from this modul is ready for microphones impedance between 150 Ohm and 50 kOhm

ED 60 Asp with equalizer