Scientech 2208, Armstrong Frequency Modulator and Demodulator is a self contained Analog Communication
board which provides an in-depth study of basic Armstrong method of Frequency Modulation. It consists of an FM modulator which uses Armstrong method of Frequency modulation with the help of a DSB-SC Balanced
Modulator, Carrier wave phase shifter and a Operational Amplifier based adder. Also a Demodulator section
which demodulate the FM wave with PLL detector and a filter followed by an amplifier. Three different
experiments show how FM wave generated using AM wave and then demodulated to extract the original
modulating wave.

Features

• A self contained platform
• Functional blocks indicated on board mimic
• Input – Output and Test points provided onboard
• Built in DC Power Supply
• On board audio oscillator, carrier oscillator, modulator, phase shifter, amplitude adjusts & filter circuits
• Compact size
• Balanced modulator which allows audio input signal to be amplitude modulated (DSB-SC) by carrier
input prior to frequency modulation, with balance adjustment
• Online Product Tutorial