# Basic circuits question

Greetings,

When connecting a circuit what does it mean when someone refers to the "ground'. Like for example, when someone says, "ok, we are connected to ground". You know? That is the sort of thing I am talking about.

phinds
Gold Member
2021 Award
There are two kinds of ground. "Circuit ground" which is just a local reference that is taken to be zero volts, and "Earth ground" which IS zero volts and is literally connected to the Earth.

analogdesign