FM Transmitter & Receiver Trainer For Electrical Lab Training

provide practical and experimental knowledge of frequency modulation / demodulation technique as practically implemented in analog communication system on a single P.C.B. of size 300x400mm. 1. Object: To Study Theory of Frequency Modulation & Demodulation: 01. Frequency modulation via varactor / reactance modulation. 02. Frequency demodulation via detuned resonant / ratio / qudrature / foster - seeley / phase locked loop detector. 03. Separate VCO circuit to demonstrate FM waveform. 2. Feature: The board consists of the following built-in parts: 01. POWER SUPPLY : ± 12DC IC Regulated power supply. 02. FM Modulating signal generator : Sine wave Frequency Range : 300 Hz to 3.4 Khz Amplitude Range : 0 to 5 Vpp. 03. Modulator Type :  Varactor modulator (With carrier frequency adjustment) Reactance Modulator (With carrier frequency adjustment) 04. Demodulator :  :Detuned resonant detector. : Quadrature detector : Foster - Seeley Detector : Ratio Detector : Phase locked loop Detector 05. Mixer/Amplifier : 1 No. (With gain adjustment) Allows FM input signal to be amplitude modulated  by a noise input to demodulation. 06. Low pass Filter :  3.4 KHz.:Cut of frequency Amplifier (with adjustable gain) 07. VCO Circuit :  FM Wave form demonstrate 08 Test Point : 78 09. Power supply requirement : : 230VAC, 50 Hz. 10. On Board Switched Faults : 8 Nos. 11. On Board Amplitude limiter with Amplitude control. 12. Input - Output and Test points provided on board. 13. A self contained Trainer. 14. Effect of noise on the detection of FM signal may be investigated. Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/ observation of waveforms. Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References. Weight : 6 Kg. (Approx.) Dimension : W 412 x H 150 x D 310 Other Apparatus Required: Cathode Ray Oscilloscope 20MHz. Patch Cords