Neon Transformers and Power Supplies These are the high voltage devices or boxes that power the neon tubing. It takes thousands of volts of electricity to illuminate a neon tube. The voltage that comes out of a wall socket is either 120 or 220 volts. The transformer or power supply is used to step-up these volts, and transform it into anything from 2,000 volts up to 9,000 volts or even up to 15,000 volts in some outdoor applications. Electronic Power Supplies These are light weight plastic power sources which have small coils and function off of electronic component. Weighing only one pound, this power supply can put out a variable range of voltage, from 1,000 volts to 10,000 volts depending on the sign requirements.
A neon sign is a very simple device. It consists of a vacuum-tight glass tube, fitted at each end with an electrode. Inside the tube is a small amount of rare gas. Connected to the two electrodes is a source of high-voltage electrical power. When the current is turned on, the tube glows with a stead....
