- #1
Physicist3
- 103
- 0
On a graph where Ic is plotted against Vce for a range of base currents, does the line represent the load resistance (Rc)?
Click For Summary
Discussion Overview
The discussion centers around the interpretation of a graph plotting collector current (Ic) against collector-emitter voltage (Vce) for various base currents, specifically whether the line on the graph represents the load resistance (Rc).
Discussion Character
- Debate/contested
- Technical explanation
Main Points Raised
- One participant asks if the line on the Ic vs Vce graph represents the load resistance (Rc).
- Another participant seeks clarification on which line is being referred to in the graph.
- A third participant corrects their earlier post, clarifying that they meant to refer to the load line, not just "the line."
- A participant appreciates the diagram linked in the discussion, noting its usefulness and the efficiency of finding it through a Google Images search.
- One participant asserts that the line does not represent the load resistance (Rc), explaining that it illustrates the relationship between Ic and Vce for varying base currents, while Rc is a fixed value in the circuit.
Areas of Agreement / Disagreement
There is disagreement among participants regarding the representation of the line on the graph, with some asserting it does not represent Rc while others have not explicitly stated their position on this matter.
Contextual Notes
Participants have not fully resolved the definitions or implications of the terms used, particularly regarding the load line and its relationship to load resistance.
- #2
berkeman
Admin
- 69,524
- 25,101
Physicist3 said:
Which line?
http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/ietron/loadline3.gif
- #3
Physicist3
- 103
- 0
berkeman said:
Sorry, meant to say load line but missed the word out the question by mistake. That's quite a good diagram btw
- #4
berkeman
Admin
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Yeah, definitely a helpful drawing. BTW, I found it very quickly by using a Google Images search on transistor load line. I like Google Images searches for many tasks, because they can get you to what you want much faster than sifting through a bunch of hyperlink hits from a regular Google search.
- #5
alphysicist
Science Advisor
- 2,500
- 2
No, the line on the graph does not represent the load resistance (Rc). The line on the graph represents the relationship between collector current (Ic) and collector-emitter voltage (Vce) for a range of base currents. The load resistance (Rc) is a fixed value in the circuit and does not change with varying base currents. The graph is used to analyze the characteristics of a transistor and determine its operating region.
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