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A Pulse Amplitude Modulation (PAM) circuit implementation using the versatile 555 timer IC and a transistor switch.
This project demonstrates a simple yet effective PAM circuit that modulates the amplitude of a carrier signal based on an input message signal. The 555 timer generates the carrier pulse train, while a transistor acts as an electronic switch to control the amplitude modulation.
The circuit consists of two main stages:
1. Pulse Generator (555 Timer)
2. Switching Stage (Transistor)
The 555 timer produces regular pulses at a fixed frequency. The message signal (analog input) is applied to the base of the transistor, controlling its conduction. When sampling pulses arrive, the transistor switches the message signal amplitude onto the output, creating PAM - discrete pulses whose heights represent the instantaneous amplitude of the message signal.
This project is licensed under the MIT License - see the LICENSE file for details.
Ashish
Feel free to fork this project and submit pull requests for improvements!
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