Variable Power Supply Using Switching Regulator

If you are a hobbyist or a professional electronic engineer who make many electronic experiment, troubleshooting, or testing, providing wide range variable voltage power supply in your lab or workshop will make your life easier. You can build your variable power supply using linear adjustable regulator, but switching technology let you design a very wide voltage adjustment range without loosing […]

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Transformerless Voltage Booster Circuit: A DC-DC Step-Up Switching Regulator Using Transistors

A DC-to-DC step-up converter is traditionally implemented using transformer, working by converting the DC voltage to AC Voltage, step-up it using transformer, then rectify and filter the transformer’s output to  get a higher DC voltage. Using a switching method, we can step-up a voltage without a transformer. We just need an inductor which is driven by a switching transistor to […]

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High Efficiency Switch Mode 3.3V 5A Step-Down Converter

This switch mode step-down converter has very good efficiency, up to 94% can be obtained. This switch mode regulator uses LTC1266-3.3 controller with external N-Channel power mosfet, and need only a 5uH inductor because it uses high frequency switching. Here is the schematic diagram of this switch mode step down converter circuit: To optimize efficiency, the LTC1266  automatically switches between […]

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Low-Drop-Out (LDO) Low-Voltage Linear Regulator Using NCP2860 IC

This low drop out (LDO) voltage regulator need only few components, with very low noise and very low drop-out voltage. The circuit illustrated in the schematic diagram below gives a fixed 2.77 volt output, but this output voltage can be adjusted using two additional resistors. This circuit capable to supply 300 mA load from 3.0 V to 6.0 V input.  […]

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