Negative Power Supply (-5V / -12V / -15V)

Sometimes you need a simple negative power supply. The best example is the contrast PSU for common small LCD device. Building -5V from a battery or a wallmart supply isn’t really easy. The author used the MAX 764/765/766 series to build the power supply. You can simply change the chip to provide the desired output.

Negative Power Supply (-5V / -12V / -15V): [Link]