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Posts tagged Door

Electronics Circuit Refrigerator Door Alarm

Electronics Circuit Refrigerator Door Alarm Parts: R1______________10K 1/4W Resistor R2_____________Photo resistor (any type) R3_______________2M2 1/4W Resistor R4_______________1M 1/4W Resistor C1______________10µF 25V Electrolytic Capacitor C2_____________100nF 63V Polyester Capacitor D1____________1N4148 75V 150mA Diode IC1,IC2_________7555 or TS555CN CMos Timer ICs BZ1___________Piezo sounder B1____________3V Battery

Electronics Schematic Diagram alarm Door Bell circuit using IC UM 66 part 1

This is a slight modification of that circuit. In the previous circuit you have to keep the switch pressed for making the IC play the full music. Here if once the push button is pressed C1 is charged and the transistor Q2 will keep the IC playing the music till it ends. The time for […]

STK457 Power Amplifier Circuit

STK457 Power Amplifier Circuit STK457 Power Amplifier Circuit STK457 Power Amplifier Circuit

Integrator

Integrator Load Feedback Amplifier circuit diagram Integrator Load Feedback Amplifier circuit diagram

Infrared Spectroscopy

infrared spectroscopy electronic circuits

Current limiter circuit and motor drive circuit Chopper

Current limiter circuit and motor drive circuit Chopper

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