ANALOG FIBRE OPTIC TRAINER – GUPTA BRAND 200434

Objective:
Voice transmission through optical fiber cable.
To study transmitter circuit & calculate its output power.
To study receiver circuit & calculate its input power.
To study the attenuation of signal between transmitter & receiver end.
Measurement of numerical aperture.
Specifications :
In built ic based fixed dc regulated power supply + 6vDc.
Pre amplifier stage consists of MIC (Microphone), photodetectors, transistors,& biasing network of resistance & capacitors. Power Amplifier stages consists of impedence matching transformers, transistors & biasing network of resistance & capacitors. Output section having LED & speaker , fiber optic cable for transmission of signal. Circuit diagram is printed on glass epoxy PCB & different combination of resistance & test point are brought out on front panel.