This circuit offers a variety of Buck DC to DC converters. Because as circuit increase voltage as the usb 5v to 12v dc-dc step-up converter. This circuit is called Boost converter circuit.
It is a ideal for small size circuit and easy. It is a switching voltage regulator circuit. 5V USB to 12V output low current such as LED display. LEarn It moRe!
This is 5V to 12V boost converter circuit or higher using transistor circuit,When if you want a negative voltage from a positive power supply.