Term ground mean in an ELECTRONIC circuit?

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Discussion Overview

The discussion centers around the meaning of the term "ground" in electronic circuits, particularly in the context of breadboards and circuit design. Participants explore various interpretations and implications of grounding in both theoretical and practical scenarios.

Discussion Character

  • Conceptual clarification
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant defines ground as the reference potential against which all other voltages are measured, indicating that it is often set to V = 0.
  • Another participant mentions that ground can sometimes provide a return path for current, particularly when connecting a power supply to a breadboard.
  • A different viewpoint suggests that in theoretical circuits, ground is simply a specified point where voltage is defined as zero, although this may not always reflect real-world conditions.
  • Another contribution clarifies that "ground" can refer to "Earth Ground," which is a low-impedance connection to the Earth, intended for transient currents and not for regular current flow in power delivery.

Areas of Agreement / Disagreement

Participants express varying interpretations of the term "ground," with some agreeing on its role as a reference point for voltage measurements, while others highlight different contexts and implications, indicating that multiple competing views remain.

Contextual Notes

There are unresolved aspects regarding the practical implications of grounding in real circuits versus theoretical definitions, as well as the specific roles of different types of ground connections.

Pranav Jha
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term "ground" mean in an ELECTRONIC circuit?

What does the term "ground" mean in an ELECTRONIC circuit?
A bus strip usually contains two columns: one for GROUND and one for a supply voltage. What does ground mean in this context and how do we ground a circuit while using a breadboard?
 
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Ground refers to the potential with respect to which all voltages are measured in the circuit. In other words, we define V = 0 here. Sometimes (but not always), the ground connection can also provide a return path for the current through the circuit. This is true in the case where you connect a power supply across the rails of your breadboard, so that the - terminal of the supply is at ground.
 


Has Cepheid said, the ground, in theoretical circuits (it might not be true in real life, but you should't bother about this now!), is where you put the voltage to zero (i.e. since you only want voltage difference, it's a specified point where V=0).
 


Pranav Jha said:
What does the term "ground" mean in an ELECTRONIC circuit?
A bus strip usually contains two columns: one for GROUND and one for a supply voltage. What does ground mean in this context and how do we ground a circuit while using a breadboard?

Good question, Pranav. In addition to the good answers provided so far...

"Ground" in electronic circuit diagrams and on instruments often refers to "Earth Ground", which is the 3rd wire routed to electrical outlets. This galvanic connection is supposed to be a low-impedance connection to Earth Ground, and is not supposed to support currents in the ground conductors. So it's a good place to dump transient currents (ESD, Surge, Burst, etc.), but it's not part of the regular differential power delivery connection from the AC Mains (Hot-Neutral).
E
 

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