500m FM transmitter circuit

500m FM transmitter circuit

  Easy , Simple and best FM transmitter circuit for homemade mini radio station 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 transmits the input signal get from the microphone upto 500 meter range […]

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 the any appliance to voltage fluctuation . When input voltage goes high then the relay will activated and also when the input voltage is below then required level then relay activated. Note– Load is connected with NC and COM pin […]