Schematics / Power Conversion
"Zero-Drop" Regulator
Low-drop voltage regulators get wide application soon after they appear on the semiconductor market, mainly because of power savings in ac-dc supplies....
110VAC Inverter for Automobile
This circuit will allow you to operate small devices like laptop computers inside your automobile without an expensive automobile power supply. The circuit takes advantage of the fact that power transformers are linear devices and can be used to step up as well as step down. This is evident by the fact that the supply drives the secondary and the output is on the primary....
Cockcroft-Walton Multiplier 
This page, from the Wenzel Associates Technical Library (www.wenzel.com), shows a series of building blocks for voltage multiplication. Very useful when a low-current high voltage is needed or for charging capacitors for xenon lamps....
5 to 15 Volt Converter
By configuring a charge-pump voltage doubler as a tripler, you can readily derive 15V from 5V...
Solar Powered +5 and +3.3 Power Supply
This design was generated as part of a remote weather station project. One of the requirements of the design is that it have a solar-powered supply with rechargeable batteries. This design is based on a photovoltaic array available from Radio Shack called a BatterySAVER (part number 980-1045)....
10 to 30KV Flyback Power Supply
This is probably the most well known flyback transformer driver circuit. It uses two 2N3055 power transistors in a push-pull oscillator configuration....