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Activity for Circuit fantasist‭

Type On... Excerpt Status Date
Edit Post #285392 Post edited:
Replaced a picture with cropped one
almost 3 years ago
Edit Post #285392 Post edited:
Replaced picture with more qualitative
almost 3 years ago
Edit Post #285392 Post edited:
Replaced picture; removed picture
almost 3 years ago
Comment Post #285392 Thanks for the fair opinion. I will redraw the two voltage diagrams illustrating only the input part with the three resistors. It is also possible to split the article into two parts - in the first, to remain only building the circuit in six steps (the structure evolution), and in the second, to cons...
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almost 3 years ago
Edit Post #285392 Post edited:
Mentioned the opposite approach - by disassembling it step by step
almost 3 years ago
Edit Post #285392 Post edited:
Added another picture
almost 3 years ago
Edit Post #285392 Initial revision almost 3 years ago
Article What is the idea behind the op-amp instrumentation amplifier?
Building the circuit structure The classic circuit of the op-amp instrumentation amplifier is an example of an ingenious circuit solution. The best way to show it is by reinventing the circuit step by step. Here is my "building scenario"... Step 1: Single-ended amplifier Let's assume the...
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almost 3 years ago
Edit Post #284873 Post edited:
Minor edit
almost 3 years ago
Edit Post #285107 Post edited:
Saying it more precise
almost 3 years ago
Edit Post #285107 Post edited:
Minor edit
almost 3 years ago
Edit Post #285107 Initial revision almost 3 years ago
Article Why does the collector current depend linearly on the base current?
It is well known that there is a linear relationship between the BJT collector and base current (Ic = beta x Ib). It would be interesting to explain it in an intuitive way. The power of such a "philosophical" approach is that it can explain various specific implementations. The idea In the BJ...
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almost 3 years ago
Edit Post #285024 Post edited:
Added links to a part of video record and screenshot
almost 3 years ago
Edit Post #285024 Post edited:
Minor edit
almost 3 years ago
Edit Post #285024 Post edited:
Minor edit
almost 3 years ago
Edit Post #285024 Initial revision almost 3 years ago
Article How does a transistor maintain a constant current?
In contrast to diodes that maintain a relatively constant voltage when the current through them varies, a fundamental property of all types of transistors (BJT, FET...) is to maintain a relatively constant current when the voltage across them varies. How do they do that? As in the case of diodes, ...
(more)
almost 3 years ago
Edit Post #284995 Post edited:
Minor edit
almost 3 years ago
Edit Post #284995 Post edited:
More about the simple arithmetic trick
almost 3 years ago
Comment Post #284995 I agree with your arguments. I used the resistance because it is the most primary quantity that leads to a change in the other quantities (current and voltage). I think in such a way: The diode is a passive element that does not produce or accumulate energy. So, the only thing it can do, is to ch...
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almost 3 years ago
Edit Post #284995 Post edited:
Added fun story
almost 3 years ago
Edit Post #284995 Post edited:
About the ZOOM meeting
almost 3 years ago
Edit Post #284995 Initial revision almost 3 years ago
Article How does a diode maintain a constant voltage?
A fundamental property of all types of diodes (silicon, germanium, Schottky, LEDs, Zener ...) is to maintain a relatively constant voltage when the current through them varies. How do they do that? This question can be answered specifically by considering the processes in the semiconductor PN junc...
(more)
almost 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284816 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Added more examples
about 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Added another picture and explanation
about 3 years ago
Edit Post #284873 Post edited:
Minor edit
about 3 years ago
Edit Post #284873 Post edited:
Saying it more precise
about 3 years ago
Edit Post #284873 Post edited:
Added clarification
about 3 years ago
Edit Post #284873 Post edited:
Added more explanations
about 3 years ago
Edit Post #284873 Post edited:
Corrected link
about 3 years ago
Edit Post #284873 Post edited:
Corrected link
about 3 years ago
Edit Post #284860 Post edited:
Corrected link
about 3 years ago
Edit Post #284860 Post edited:
Corrected link
about 3 years ago
Edit Post #284873 Post edited:
Corrected link
about 3 years ago
Edit Post #284873 Initial revision about 3 years ago
Article What are voltages inside resistors?
Need to visualize voltage distribution Once visualized the voltages of the internal circuit points, we can go even further and "enter" inside resistors to visualize the voltages along the resistive film. This will allow us to see some interesting points (for example, virtual ground), the operati...
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about 3 years ago
Edit Post #284860 Post edited:
Minor edit
about 3 years ago
Edit Post #284860 Post edited:
Added another link
about 3 years ago
Edit Post #284860 Post edited:
Minor edit
about 3 years ago
Edit Post #284860 Post edited:
Minor edit
about 3 years ago
Edit Post #284860 Post edited:
Added another picture
about 3 years ago
Edit Post #284860 Post edited:
Structuring
about 3 years ago