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ADP1821 Step Down DC-to-DC Converter

August 27, 2010 Rend 0

This is a ADP1821 Step Down DC-to-DC Converter circuit. This circuit uses ADP1821 that is synchronous pulse-width-modulated (PWM), step-down controller, inexpensive and versatile. It can […]

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Separate ON-OFF Touch Switch

August 17, 2010 Rend 0

This schematic diagram is about touch switch circuit.  Separate ON and OFF switch improves the ergonomics for safety, since the touching off button when the […]