Educational trainer


1. Voice transmission Microphone.
2. Sound receiving to Speaker




  • In built IC based Fixed DC Regulated Power Supply +12VDC/1A.
  • On board 1KHz sine wave oscillator provided.
  • Input amplifier stage using TL074.
  • Low Pass filter given on board.
  • AC amplifier given on board.
  • Power Amplifier given on board with volume control.
  • Circuit diagram is printed on glass epoxy PCB & different combination of resistance.
  • Test point are brought out on front panel .


  1. Adequate no of 4mm Patch Cords required for the Experiments.
  2. Microphone for Voice Transmission.
  3. Speaker for Voice Receiver End.



More Products of PHYSICS