Free circuit schematics - wiparat.com

Here is the switching regulator 12V,so input 5V to output 12V at 0.13A.
It is Step-Up DC Converter by IC LT1073-12 Micropower DC/DC Converter.
I very like IC by http://www.linear.com because it is very small size and good ic.
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In many cases can be very handy to be able to convert 1.5V to 5V. Then you can power microcontroller or LED from a single AA or AAA battery. It is simple to do this as there are special IC’s as MAXIM MAX1674 or MAX7176. This is step-up DC-DC converter that can convert voltages from [...]