Neon signs are attracting more and more people to check out stores and business units. They are often placed outdoors with covered canopies so that they are easily seen and highly noticeable. But placing these signs outdoors subjects them to a variety of conditions. With harsh weather and occasional power surges their transformers can easily get damaged.

Neon sign transformers are specifically built for the purpose of powering up neon signs. They are used mainly to convert raw voltages ranging around 120-240 volts but can go as high as 3-15kV. They can also generate currents between 20 to 120mA. The most common current for general use of neon ad signs, though, is around 30mA while high-intensity and brighter lights may require as much as 60-120mA. High currents are seldom used, however, because the electrodes cannot withstand the strong current.

In early years, the neon sign transformers are iron-cored. This design allows the signs to operate at much higher frequency but they are very heavy. With advancements in technology, modern transformers use switch-mode power supplies. They are smaller and lighter but still produce the same amount of voltage as iron-core transformers.

Safety is always a consideration especially with electrical supply units such as this. High currents used in transformers can produce electrical shocks which can prove to be fatal. Extra care should be observed in installing this item to avoid electrocution. With so many transformers to choose from in supplies stores, make sure to always buy high quality ones. Lastly to keep the transformers longer lasting and safe, place them inside transformer boxes made of durable electro- galvanized sheet steel.