Induction Coils

• Induction coils can increase voltage. Induction coils can be used to cause incandescent lights to glow just as neon signs do. Tesla coils can be used as a transformer in neon signs. However, transformers called neon sign transformers (NSTs) are more commonly used.
  
  

Neon Sign Transformer

• A neon sign transformer converts electricity to the high voltage to ignite the neon or argon gas when the neon sign is turned on. The transformer converts the standard 120 voltage to between 2,000 and 15,000 volts needed for a neon sign. A failing transformer can cause neon signs to flicker.
  
  

History

• Both Sir William Crookes and Nikola Tesla used induction coils to create high voltage in their experiments in making materials glow. Crookes used induction coils to make incandescent lights. Nikola Tesla's experiments led to the first high-frequency and high-efficiency fluorescent lights.