Handy 3.3V Power Supply

A simple yet handy 3.3V power supply for testing your electronics projects. The source of the power is any USB output, a computer, a battery power pack or wall outlet.
Very useful when testing micro-controller type projects that require 3.3V such as the ESP8266.

There are two types
Type A has a USB type A plug to plug into a USB socket.
Type B has a type B socket.

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