USB (Universal Serial Bus) provides DC (Direct Current) voltage.
USB connectors were designed to deliver DC power along with digital signals. The prevalence of the USB power voltage level and connectors has led to their widespread adoption, even in applications where only power is required.
Here's a breakdown:
- DC Power: USB ports supply a steady DC voltage, typically 5V.
- Power Delivery: Modern USB standards, like USB Power Delivery (USB-PD), can provide higher DC voltages (up to 20V) and higher power levels (up to 240W) for charging laptops and other devices.
- No AC Involvement: USB does not involve AC (Alternating Current) voltage in its standard operation.
