4 ms·
In a previous life, we distinguished between ground and earth, where "ground" was a sloppy term to describe a circuit's zero reference, and "earth" was a precis
by brandmeyer 8y ago
In a previous life, we distinguished between ground and earth, where "ground" was a sloppy term to describe a circuit's zero reference, and "earth" was a precise term that described the zero-current safety path to the dirt.
The team was highly international, with a strong European influence, so that could also have been part of it.
- jlokier 8y agoIn the UK, at least, that distinction is still used. GND is the symbol for 0V in circuits. Earth is, as you say, the safety path to actual ground. It's the 3rd pin on domestic mains plugs, and you can't call something earthed if it doesn't connect to the safety path. But I'm pretty sure we use "virtual earth" for op-amps :-)