
This magnetic transformer is the most common choice for channel letters. Standard transformers generate their power through a magnetic coil, and are used for neon illuminated channel letters.

This magnetic transformer is used for self-contained neon illuminated letters. PBKM transformers generate their power through a magnetic coil, and are used for letters 8 or more inches deep. Neon tubes feed directly into this type of transformer.

This electronic transformer is used for self contained, neon illuminated channel letters. It is mounted on the inside back of the letter, and is typically used in letters that are 5 or more inches deep.

This type of transformer is used for LED illuminated channel letters. It runs 30 to 40 feet of LED depending on the LED color.