Breadboard and ground

[jproject]

Hello everyone,

I started playing around with circuits about a month ago and I realized I forgot to set up my breadboard's ground screw as ground. So, how do you set the ground screw to the ground on a large breadboard?


Thank you.

[Simon]

connect it to the negative of the power supply ? if I have understood correctly that it

[jproject]

Look at this link:

http://alienproject.files.wordpress.com/2009/04/gps-breadboard-overview.jpg

You see the black screw in the top middle of the board right? What I meant was how do I make that into a ground when I have one terminal voltage source.

[Simon]

usually you connect the negative or ground of your power supply to this and then use it to supply negative/ground to your circuit.

if your working with batteries and need a physical ground connect it to earth instead (cold water pipe)

[jproject]

I understand that but I thought there was a way, for an example, to make the oscilloscope provide one terminal AC power source and you connect that to the ground. I remember doing this in a lab a while ago but I guess I'll recheck again to see the full circuit.

[Simon]

oscilloscopes don't provide power. the oscilloscopes earth is connected to the mains earth so you may have used that to ground your circuit which saves you the hassle of making up a specific ground wire if you device needs physically grounding