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Strip LED Lamp
Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with...
Step-Up Converter For 20 LEDs
The circuit described here is a step-up converter to drive 20 LEDs, designed to be used as a home-made ceiling night light for a child’s b...
Simple +12v to +9v converter Circuit Diagram
This little circuit uses a LM317 variable voltage regulator to adjust the input voltage down to +9 volt, or whatever else you need. Ju...
SIGNAL INJECTOR
This circuit is wealthy in harmonics and is good for testing amplifier circuits. to seek out a fault in an amplifier, connect the planet cli...
4-Bit Analogue to Digital Converter
The operation of the converter is based on the weighted adding and transferring of the analogue input levels and the digital output levels...