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Posts tagged Automatic Cut-off Control

Ignite Video Processor with AutoScout Cut-off Control

Video Processor with Automatic Cut-off Control using TDA4686 Video Processor with Automatic Cut-off Control using TDA4686 General Description The TDA4686 is a monolithic integrated circuit with a luminance and a colour difference interface for video processing in TV receivers. Its primary functions is to process the luminance and colour difference signals from a colour decoder […]

Portable guitar headphone circuit

Portable guitar headphone circuit I built a portable headphone amplifier for testing purposes Headphone amp circuit using : R1 = 10K R2 = 100K R3 = 68K R4 = 1.5K R5 = 3.3K R6 = 330R R7 = 4K7 R8 = 2.2R C1 = 1µF-63V C2 = 100µF-25V C3 = 470µF-25V Q1 =  BC239C Q2 […]

Universal Laptop Power Supply

Universal Laptop Power Supply using LM741 and 2N3055

loudspeaker protection circuit

loudspeaker protection circuit and Muting Circuit using BC546 BC549 Relay

PC serial port RS-232 pin out and wiring

PC serial port RS-232 pin out and wiring

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