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Posts tagged Bell

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 […]

China tv circuit diagram – Original datasheet

China tv circuit diagram – Original datasheet China tv circuit diagram free download

Schema and layout Best power amplifier 2SA1943, 2SC500, C945, TIP42C, TIP41C

Schema and layout Best power amplifier for live sound Power amplifier sound system, sound barrier power amplifier, Best powered subwoofer car, best power amplifier for home theater, best powered Subwoofer, infinity powered subwoofer – Transistor final 4 set Part : 2SA1943, 2SC500, C945, TIP42C, TIP41C, Transformator 2A, 5A, 10A, 20A, 30A, 40A, 60A – 100A […]

Earthquake Detector

Earthquake Detector Biased photodiode, Earthquake Circuit Diagram, earthquake detector, frequency counter, optical receiver, Oscilloscope, plane miror, two frequency laser  

ESR meter circuit

ESR meter circuit using 78L05, Z86E0412, 4094, BC328, BC558, BC338, BC548, 1N4148, 1N4002

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