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500m FM transmitter circuit

500m FM transmitter circuit

  Easy, Simple and best FM transmitter circuit for homemade mini radio station Circuit diagram Components Transistor- 2N3904-2 Resistor-1M-1, 470Ω-1, 47kΩ-2, 10kΩ-1 Capacitor-1nf-1, 0.1uf-3, 10pf-2, 33pf-2 Inductor- 4-5 Turn of 4 mm dia air core coil of copper wire Condenser mic-1 This simple and easy FM transmitter circuit can transmit the input signal gets from the microphone up to the […]

UnderVoltage and Overvoltage Protection circuit

UnderVoltage and Overvoltage Protection circuit

Over-voltage and Under-voltage Protection Circuit for  High and Low Voltage Cutoff. This voltage sensor circuit can be used to protects any appliance to voltage fluctuation. When the input voltage goes high then the relay will be activated and also when the input voltage is below then required level then relay activated. Note– Load is connected with NC and COM pin […]