SCOPE OF LEARNING:
• Study of Frequency Modulation using Varactor modulator
• Study of Frequency Modulation Using Reactance Modulator
• Study of Operation of Detuned Resonant Circuit
• Study of Operation of Quadrature Detector
• Study of Operation of Phase-Locked Loop Detector
SCOPE OF LEARNING:
• Study of Frequency Modulation using Varactor modulator
• Study of Frequency Modulation Using Reactance Modulator
• Study of Operation of Detuned Resonant Circuit
• Study of Operation of Quadrature Detector
• Study of Operation of Phase-Locked Loop Detector
• Study of Operation of Foster - Seeley Detector
• Study of Operation of Ratio Detector
SALIENT FEATURES:
• Front panel built with high class insulated Printed Circuit Board sheet with well printed circuits and symbols.
• Instruction manual.
• Connections are brought out through 2mm Sockets.
• Patch Cords 2mm.
• The trainer is housed in ABS Plastic cabinet/Wooden Cabinet.
• Size of the trainer set 12”x10”
OPTIONAL ACCESSORIES:
• CRO
TECHNICAL SPECIFICATIONS:
On Board
• 8 switched faults.
• Audio Oscillator : With adjustable amplitude & frequency (300 Hz - 3.4 KHz)
• Two Types of FM Modulator:
1. Reactance Modulator (with carrier frequency adjustment)
2. Varactor Modulator (with carrier frequency adjustment)
• Mixer / Amplifier: Allows FM input signal to be amplitude modulated by a noise input prior to demodulation, with gain adjustment.
• Transmitter Output Frequency. : 455 KHz
• Five Types of FM Demodulator:
1. Detuned Resonant Detector
2. Quadrature Detector
3. Foster - Seeley Detector
4. Ratio - Detector
5. Phase Locked Loop Detector
• Low Pass Filter Amplifier: 3.4 KHz cut off frequency. (with adjustable gain)
• Effect of noise on the detection of FM signal may be investigated.
Power Supply:
• Fixed DC Power Supplies +15V DC, 250mA
• Operated on Mains power 230V, 50Hz +10%
Components are mounted on the panels are:
• IC
• Capacitors
• Resistors
• Diode
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