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Posts tagged 66

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 […]

How the Principles of the VGA work on PAL and NTSC – converter

This series of VGA video signal in RGB format compatible with PAL or NTSC standard video timings. AD722 is very low, RGB to NTSC / PAL Encoder that converts red, green and blue color component signals into a suitable lighting (baseband amplitude) and Chrominance (subcarrier amplitude and phase) signals in accordance with either NTSC or […]

power supply using A723

power supply using A723, Tube

Power Supply TV China circuit

Power Supply TV China circuit Power Supply Circuit Diagram Supplay tv circuit diagram free

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