Fibre Optic Trainer Analog

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), photo-detectors, transistors,& biasing network of resistance & capacitors. Power amplifier stages consists of impedance 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.