Microphone Amplifier

Amplivox Communications Ltd.; Wembley

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  • Year
  • 1962 ?
  • Category
  • Microphone or Pick-up element
  • Radiomuseum.org ID
  • 329519

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Transistors
  • 3
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • - For headphones or amp.
  • from Radiomuseum.org
  • Model: Microphone Amplifier - Amplivox Communications Ltd.;
  • Notes

  • A miniature encapsulated three transistor amplifier designed to replace carbon microphones by high speech quality magnetic and noise cancelling units. The amplifier weighs about ⅔ oz, has a voltage gain of 50dB, contains a surge limiting diode and an output control. It is designed for mounting in hand microphones, in the handles of telephone handsets and in aircraft radio transmitters (with full Ministry of Aviation type approval), particularly those of American manufacture. The power is obtained from the polarizing voltage existing in the equipment.

  • Net weight (2.2 lb = 1 kg)
  • 0.021 kg / 0 lb 0.7 oz (0.046 lb)
  • Mentioned in
  • -- Original prospect or advert (Electronic Engineering volume 34, year 1962.)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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