How many adapters of LED neon signs?

LED neon signs typically use various types of adapters depending on their size and power requirements. Common adapters include:

1. USB Adapters: For smaller signs, often powering through standard USB ports.
2. AC to DC Adapters: These convert standard AC wall current to the DC required by the LED strips, usually ranging from 12V to 24V.
3. Battery Packs: For portable signs, these allow for battery operation.

The specific type and number of adapters you might need will depend on the design and power specifications of the sign you choose. If you have a particular sign in mind, checking its specifications will give you the best information!