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Posts tagged burglar alarm circuit

Simple Alarm Circuit using 12C509

alarm circuit diagrams Simple Alarm Circuit using 12C509, 2N7000, 78L05

Bridge Adapter

Bridge Adapter For Power Amplifiers using TL072 Bridge Adapter For Power Amplifiers using TL072

500w Power Audio Circuit For Horn

500w Power Audio Circuit For Horn Part: R1 27 kΩ         C1 1 µF 63V                D1 1N759A zener 12V 0.5W R2 4.7 kΩ        C2 1nF 100V               D2 1N4738AT zener 8.2V 1W R3 5.6 kΩ        C3 100 µF 16V            D3 1N4738AT zener 8.2V 1W R4 5.6 kΩ        C4 100 nF […]

Circuit HAMCOMM MODEM

The program only needs a simple “infinite gain” circuit to square off the input tones so that they can be read by the serial port. This is achieved using a 741 operational amplifier. The basic circuit of the unit is given below. The RS232 pins are given for a 9-pin serial port. A 25-pin port […]

Motion alarm sensor using LM7215, ZVN4306

Motion alarm sensor using LM7215, ZVN4306 Motion alarm sensor using LM7215, ZVN4306

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