Hardware Implementation of AM Radio Transmitter and Receiver

For long-distance data transfer, the first condition of the signal power has to be enough strong. The voice signal frequency is almost below 3400Hz signal which has no good enough power to transmit long-distance. Amplitude modulation (AM) is a modulation technique in which the amplitude of a high-frequency sine wave (usually at a radio frequency) …

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Automatic Water pump controller using BJT

This is one of my favorite analog electronics projects because this is the lowest cost but efficient automatic water pump controller. Components require for this project are 3 BJT model BC547, 1 Buzzer, 1 Relay, 8 Resistors, 1 Diode, 1 Led, Wires for sensing water level.  So all the components cost not more than $1. I …

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Design of Electronic Switch using Transistor

Normally the function of a switch is either turning on or off close path of current flow and carry current at any direction. If there were no switches, We would have to disconnect or connect every time from main power supply whenever we need to turn off or on light, fan etc. These are all …

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