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Posts tagged 2N3819

Simple RF Signal Strength Meter

Simple RF Signal Strength Meter RF Signal Meter circuit diagram Signal Level Meter, Satellite Meter QAM & DVB Analyzer using 2N3819, 2N229  

Light sensor circuit diagrams

Light sensor circuit diagrams Light sensor circuit diagrams This circuit has two distinct functions, either using the same light sensor, a circuit module is useful for light and turn off the lights (relay), and that only produce sound. Usually applies to a security alarm place. Components used: Sensor LDR 2N3904 Relay Audio alarm using LM386

Power supply and motor control circuits – Tip31 circuits

AC voltage regulator and motor control circuits – BC182, Tip31 circuits Motors and drivers Tip31 circuits Circuit diagram of the motor control it, serves to control the motor, the electric door, so there are 2 switch is used to start the motor rotates clockwise or opposite direction, meaning the switch to open S1, and S2 […]

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