The Study of Pulse Width Modulation and Demodulation trainer from AGN Enterprises is an educational communication laboratory system designed for the practical study of Pulse Width Modulation (PWM), pulse modulation, modulation techniques, demodulation, and signal recovery. It helps students understand how the width of a pulse varies according to the instantaneous amplitude of an information signal.
In Pulse Width Modulation, the amplitude of the transmitted pulses remains substantially constant while their width or duration changes according to the message signal. Therefore, students can investigate the relationship between the input information signal and the resulting PWM waveform through practical experiments.
The trainer enables learners to apply suitable message and carrier signals and observe the generated PWM output. By varying signal conditions, students can study changes in pulse width and understand the relationship between modulation and pulse timing. Moreover, a compatible oscilloscope allows students to observe the message, carrier, PWM, and recovered signals at appropriate test points.
During demodulation, the PWM signal is processed to recover the original information signal. Consequently, students can compare the input message waveform with the demodulated output and evaluate the signal-recovery process. These experiments provide practical understanding of pulse width variation, sampling concepts, modulation, demodulation, filtering, and waveform reconstruction.
Furthermore, the trainer develops practical skills in signal measurement, frequency observation, waveform analysis, circuit connections, and communication-system testing. It is suitable for demonstrating fundamental pulse-modulation concepts in a structured laboratory environment.
The PWM training system provides a practical platform for studying pulse-based communication techniques. In addition, instructors can demonstrate how information is represented by pulse duration and subsequently recovered through a suitable demodulation process.
