Description The power supply module is straightforward. There is a 2.8 to 5.5 V DC input and the module outputs 12 V and -12 V DC dual power supply voltage with a current rating of a maximum 30 mA. Off course the current output is low but sometimes it suits in many situations where one is looking forward for a small boost converter having such voltage capability and small size. The typical use can be as most operation amplifiers, Digital to analog, and analog to digital converters. The other used one can think about. The beauty of the converter is its small size about an inch and very low price.