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    Electronic help

    That is your reason why a BJT is called a bipolar device? Transistors are specified by beta, not gain. The amplification is determined by the transistor parameters and the circuit. The slight increase of Vbe is what causes a higher collector current. Whoever "we" is, is wrong. The...
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    Surface resistance

    ROA = resistance of area? Just guessing. Ratch
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    JFET Depletion Regions

    Why can't it be explained simply? It is a straightforward principle that does not need a no holds barred brawl like the one we had discussing the concept of whether a current or voltage controls the current of a BJT. A BJT controls current by passing charge through the depletion region (DR)...
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    JFET Depletion Regions

    Evidently, you have not studied depletion regions (DR) very much. If you did, you would realize that it takes more lightly doped (concentration) material to balance the charge of the higher doped material on the other side of the DR. Therefore, you can expect the width of the lightly doped...
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    LED circuit help

    Not to worry, Since the LEDs/diodes are in series, one individual diode cannot possibly use more current that any of the other diodes do. The current rises to the same value in each diode simultaneously. Some diodes might light up at slightly different currents when starting up, but that is...
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    Electron Flow vs Energy Flow? - Help me understand

    Similarity is a problem in learning one discipline by studying another. Many of the equations that define the operation of each field of study are the same, but some characteristics of each do not exist in the other. So things are almost the same but not quite when delving deeper into the...
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    Circuit Analysis Help

    Voltage is never left out in node analysis. The voltage across the 2 ohm and 6 ohm resistor is 9 volts higher than the voltage "v" across the 3 ohm resistor. Ratch
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    Circuit Analysis Help

    Correct, you don't know what you are doing. What is A, B, and C? You have a supernode (two nodes separated by a voltage) in that circuit that makes evaluation easy and simple. Assume "v" is on the negative of the 9 v battery. Then the node equation is (v-21)/4+v/3+(v+9)/2+(v+9)/6=0 ...
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    Electron Flow vs Energy Flow? - Help me understand

    The electric field moves the charge carriers in a conductor, not the other way around. There is no energy transfer in a conductor unless the charge carriers move. You would do well to forget about analogies when determining how something works. A resistor heats and dissipates energy no...
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    Electron Flow vs Energy Flow? - Help me understand

    That is because there is a lot of BS (Beautiful Sunshine) around, both verbally and in print, bemusing you and others. But not me, however. Do your circuits leak? Do you get wet when you work with or study them? Tell me, do hydraulic engineers study electrical circuits to learn their craft...
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    Transistor bias configuration

    There is a lot more to bias than just getting the voltages correct. There is also stability with respect to variations in temperature, beta, components, and power supply fluctuations, Each one of these has a defined stability factor which can be calculated. Ratch
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    Simulate a variable capacitor

    Google for "variable frequency low pass filter". Lots of entries come up. Or maybe you want high pass. Ratch
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    A Quick Question About Cadence

    No, Linux is an operating system (OS), not a programming language. Ratch
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    Transistor bias configuration

    Correct, if we see something that we think is not correct, most of us take action to point it out ASAP. Then the OP's question was answered and he could just walk away if he wanted. However, these threads are also for folks other than the OP. They might enjoy a further discussion. I don't...
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    Transistor bias configuration

    You are beating up on that abreviated circuit. Obviously, it only shows the DC bias components of its operation. To make it operational for AC, a capacitor will be placed between the voltage input and the base terminal. The feedback resistor Rb will be split and a capacitor inserted between...
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    Make a Mind Controlled Arduino Robot Book

    OK, I understand how it works now. However, I think they are misrepresenting that device/method by calling it a "mind control" mechanism. The human mind can control many physiological parts of the human body like skin electrical characteristics. I don't see any operational difference between...
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    How to foster learning and inquiry in our kids.....

    I for one cannot understand why the teacher could not discern if there was a explosive package connected to the clock. Even though she was an English teacher, she and all the others should have had a modicum of science knowledge and basic sense to know that bombs = explosives. No wonder the kid...
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    Make a Mind Controlled Arduino Robot Book

    Enhanced energy capacity from a small battery is an interesting achievement, but I am more interested in how the mind controls a robot or anything else. Can you elucidate for me how this is accomplished? At least one enquiring mind would like to know. Ratch
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    Current Mirror question

    Since there is more than one way to make a current mirror, how do you expect anyone to answer your question if you do not include a schematic in your post and designate the part of the circuit you are having trouble? Ratch
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    Transistor bias configuration

    Yes, we do try to answer OP's questions thoroughly and completely, don't we? Where is that happening here? A passionate argument about technical details is not an ego trip. I don't see any disparagement, bragging, or any other forms of self-aggrandizement going on. The way a transistor...
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