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themselves or for their employers). I have refused to benefit something from my insights about circuits; I am not obliged to generate them for someone; I am free to share them with people... I do not bury them in some pay sections, articles or books where they will die. I do (did) it in
Knowledge (XXG) because of its highest Google rank. Thus, if a month ago some curious young visitor typed "negative resistance" in the Google window and then clicked on the first Google
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You can imagine how powerful this wiki approach is where students and their teacher, all together, work on the same common project! They add, edit and continuously refine it; they learn how to present what they have done to other, how to contribute a wiki project, how to communicate with people, etc.
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as an alternative to the classical formal "robot-friendly" approach:) This philosophy relies more on human imagination than on logical reasoning. It considers analog circuitry more as art than science and the creation of electronic circuits as a result of human fantasy, imagination and enthusiasm. If
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I just believe that we - human beings - can really understand abstract electronic circuits relying only on our human intuition, imagination and common sense. Basic circuit ideas are "non-electrical"; they do not depend on the specific implementation (tube, transistor, op-amp etc.) They are immortal;
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Then, I noted that this simple but powerful idea (connecting an equivalent voltage source in series to a passive element to compensate the voltage drop across it) is developed further in circuits with true negative impedance (VNIC) where the "inserted" voltage exceeds the voltage drop across the
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As a rule, my edits are considered by orthodox wikipedians as an original research. The "problem" is that my mind is arranged in such a way that I always manage to see, extract, generalize and explain easily basic circuit ideas. This affords an opportunity to me of reducing the complex circuit
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they do it. Long ago, I noted that inventors, scientific researchers and producers do not like to disclose the secrets behind circuits as they want to benefit from them. They have no time to explain them to people; they do not see any reason to do it for people; they have to earn money (for
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page is my great achievement in the area of basic logic gates. I have managed to force my great insight (presenting ECL as a transistor stage with switchable emitter voltage and current sources) upon wikipedians inhabiting this space and even to place a link to the impressive
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I joined electronics
Knowledge (XXG) in 2006 with great enthusiasm. I was noted that Knowledge (XXG) articles in this area were formal and theoretic; there had not introductory sections saying what the circuit idea actually was. Thus I came with clear and obvious purpose -
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was created and maintained completely by me. The theorem and its dual are shown not only as effective tools for creating equivalent circuits but also as powerful tools for designing and understanding circuits based on modifying impedance by additional voltage or
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every ordinary human being. It can be explained (of course by using appropriate analogies, metaphors and relations) even to a curious 6-year boy (Einstein)! This is the power of my intuitive, qualitative explanations; this is the reason to not cite them...
323:. In contrast to previous my versions, I have considered the behavior of negative resistors in the three regions of their "S" or "N" shaped IV curves (positive - negative - positive). I have finally generalized negative resistance into negative impedance.
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in main and talk pages. Most of them are removed and thrown away in history. I have extracted and placed a list of links to all these resources (both present and old) below to give a chance to readers to learn about the basic ideas behind these circuits.
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Furthermore, any web visitors (including other students and their teachers) through the world can join and enrich this open project! If you are a teacher, student or you just like education, join our web initiative! Here are links to my student groups:
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All the written by me in
Knowledge (XXG) articles is the very simple, obvious and clear truth about circuits. It can be immediately seen if only look at the written; it can be immediately verified only by means of common sense. It is a truth that
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across the resistor; a virtual ground appears at the op-amp inverting input and the resistance R is eliminated. Thus I reduced this electronic circuit to a more elementary electrical circuit consisting only of a resistor R and a voltage source
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solutions to extremely simple and comprehensible equivalent electrical circuits that do not need citing. Maybe, this is a unique mental ability since I cannot find sources revealing circuit ideas in such a way; thus the problem with citing.
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is a dual story (created and maintained completely by me) showing how the imperfect passive circuit (again a humble resistor) can be made act as almost ideal one by compensating the undesired voltage drop across the
133:, he/she would learn what differential and true negative resistors are, what the difference between them is, how to make them, etc. But if the curious visitor does the same now, he/she will learn nothing from the
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to show how to reveal the ideas behind circuits. The main purpose of this e-book is to reveal once and for all the true, pure and real fundamental ideas behind circuits. It establishes new human-friendly circuit
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564:. I have shown that TTL has come from DTL since the base-emitter junctions of the input multiple-emitter transistor act exactly as the diode switches of DTL (this fundamental idea is removed from the
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is a copy of an old
Knowledge (XXG) discussion (already deleted) where I have revealed the truth about Chung's experiment as a great misconception in the area of negative resistance phenomena.
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shows step-by-step the evolution of the imperfect passive circuit (a humble resistor) to the almost ideal op-amp version by compensating the undesired voltage drop across the resistor.
718:. I started this initiative "in sport" but it turned out so successful and exciting that now I am entirely absorbed in this new web undertaking. I have told how it has started in the
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330:(February 6, 2009) is an improved and very well developed story about the truth behind negative resistance. Only the negative resistance regions of IV curves are considered.
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reveals the secret of memristive elements in the talk page (in contrast to the introductory article part, it shows that there is nothing magnetic in a memristor).
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to reveal the basic ideas behind circuits by clear and obvious explanations based only on basic electricity and electronics laws, human intuition and common sense
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I have a natural interest in generalizations and parallels in circuitry. My pursuit is to reveal the fundamental ideas behind circuits - to show not only
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begins with an exciting story about realizing and developing my notion about the great idea. Then I have shown the key points of exposing Miller theorem.
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is an intuitive explanation of the lag phenomenon of capacitors in the talk page (based on a correspondence between me and a curious web reader).
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is this last unhappy discussion where I have done all my best to reveal the truth about RC oscillators and particularly, Wien bridge oscillator.
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591:(about 80% share). Here I have revealed in details the basic idea and the operation of the legendary circuit (transistor and op-amp version).
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is dedicated to the first logic family. In the introductory part of the article, I have revealed the secret of the odd diode AND logic gate (
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is my reply where I have revealed the secret of the legendary
Howland current source (I have shown that it is a negative resistance circuit).
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4. To make students create new circuits, we teachers have to (re)invent the existing circuits according to the basic ideas behind them.
337:(December 3, 2006) is my first naive but enthusiastic version of this page. Then I had no notion about wikipedian manners and customs.
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3. To successfully present circuits to students, we teachers have to build them step-by-step according to the basic ideas revealed.
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idea in the early 90's). Then I saw that in this circuit, the op-amp acts as a compensating voltage source adding so much voltage V
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344:(September, 2006) is my first insertion to Negative resistance talk page; it is a suggestion for reconstructing the main article.
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In the section about the op-amp internal structure, I have revealed the secrets of Widlar op-amp input differential stage.
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560:. In the introductory part of the article, I have revealed the truth about TTL by using the fundamental concept of
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580:. In the beginning of September 2011, I presented two papers dedicated to basic ideas and the operation of ECL at
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My name is Cyril
Mechkov. I have been teaching basic, analog, digital and mixed electronics since 1986 at the
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but it is even more general; it is non-electrical. So, we can see it everywhere around us as the universal
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and maybe he/she will never visit this page again. This is (was) my idea of
Knowledge (XXG) contributing.
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598:. In the introductory part of this article I have shown how the elementary memory cell (latch) is built.
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1. Electronic circuits are based on clear and simple basic ideas, which may be derived from our routine.
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2. To really understand electronic circuits, we - human beings, first have to reveal these basic ideas.
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An interesting discussion about the biasing idea of a common-emitter amplifier at the whiteboard in the
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is an intuitive explanation of the ubiquitous phenomenon based on the negative impedance viewpoint.
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is a similar discussion about the powerful negative resistance viewpoint at electronic oscillators.
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you have an interesting story about amazing circuit phenomenon, contribute to the novel book!
315:(my last version, about 80% share). I have been developing this page since 2006. I have shown
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is a list of questions about the nature and implementation of negative impedance converters.
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is one of my great circuit insights revealing the secret of gyrator (Đ° simulated inductor).
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R as it loses across the resistor. In this way, it neutralizes the undesired voltage drop V
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of the first completely finished page that my students and I have dedicated to the famous
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I will illustrate this my mental ability by revealing the basic idea behind the legendary
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is an extract from an old
Knowledge (XXG) discussion about the virtual ground phenomenon
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contains my insights about the unique properties of negative feedback amplifiers.
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with equally weighted inputs and the next common-emitter transistor stage - as a
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The intuitive mind is a sacred gift and the rational mind is a faithful servant.
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Why the neon lamp is a negative resistor and how it behaves when voltage driven
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the diode AND gate is actually a diode OR gate with inverted inputs and output
488:. Here I have explained in details the operation of the astable multivibrator.
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contains interesting thoughts about using a negative resistor as an amplifier.
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is my first attempt to enlarge and generalize the Miller effect (I have based
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Talk:Revealing the truth about
Deborah Chung's "apparent negative resistance"
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We have created a society that honors the servant and has forgotten the gift.
401:(July 1, 2006) is my first material about the fundamental ideas behind NICs.
537:: it is performed by applying consecutively the two arithmetic operations
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how differential and true negative resistors (circuits) can be implemented
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Why there is a phase shift between the current and voltage in a capacitor
211:, I have emotionally told how I realized this extremely simple but great
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is my first insight about the fundamental idea behind logical operation
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are interesting thoughts about the nature of differential resistance.
545:(particularly in RTL, the input resistor network acts as a parallel
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What is the basic idea behind a negative impedance converter (NIC)?
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reveals the secrets behind the operation of the long-tailed pair.
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compensating energy losses with equivalent additional energy
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Revealing the truth about electrical resonance phenomenon
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The operation should be illustrated by the AC load line
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How do op-amp negative impedance circuits (INIC) work?
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R across the resistor R by adding equivalent voltage V
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is a comparison between the two kinds of oscillators.
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In the op-amp circuit of a transimpedance amplifier (
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is my great insight about the ubiquitous phenomenon.
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What memristors, memcapacitors and meminductors are
779:If you would like to know more about me, visit my
317:what differential and true negative resistance are
499:How are hysteresis and positive feedback related?
351:is an old discussion where I have explained that
341:Another fresh viewpoint at negative resistance
710:In the beginning of March, 2008 I decided to
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384:Positive feedback -> negative resistance?
289:shows some my thoughts about Miller theorem.
787:and all the materials located at my site
635:Electronic elements (real and simulated)
464:How do RC oscillators produce sine wave?
236:element. Finally, I generalized it in
658:presents this odd circuit as a bridge.
73:. My teaching philosophy (see my EWME
286:Op-amp applications of Miller theorem
7:
151:perfect current-to-voltage converter
77:to know more about it) is simple:
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471:Negative resistance LC oscillator
457:Relaxation versus LC oscillations
706:Joining students to Circuit idea
625:Demystifying negative feedback
553:with a threshold about 0.7 V).
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662:Demystifying gyrator circuits
377:Negative resistance amplifier
252:Knowledge (XXG) contributions
71:Technical University of Sofia
427:Voltage-to-current converter
420:Current-to-voltage converter
334:Negative resistance very old
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557:Transistor–transistor logic
67:Computer Systems Department
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348:What negative impedance is
97:My Knowledge (XXG) mission
530:Resistor–transistor logic
135:current miserable version
256:Since 2006, I have made
201:transimpedance amplifier
195:My great circuit insight
680:Wikibooks contributions
327:Negative resistance old
300:on these my insights).
293:How to modify impedance
610:Differential amplifier
582:CS conference in Ohrid
203:(in the talk pages of
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52:(the photo is made by
18:User:Circuit-fantasist
617:Operational amplifier
572:Emitter-coupled logic
232:connected in series.
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789:circuit-fantasia.com
675:(to be continued...)
478:Electrical resonance
213:voltage compensation
209:Voltage compensation
692:I have established
578:ECL wikibooks story
442:Talk:Virtual Ground
438:(December 14, 2007)
359:negative impedance.
312:Negative resistance
306:Negative resistance
279:Talk:Miller theorem
188:will be realized by
184:can be explained to
61:Teaching philosophy
56:on April 23, 2008).
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712:join my students
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16:(Redirected from
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724:Ohm's experiment
562:current steering
513:Digital circuits
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451:Oscillators
785:philosophy
720:discussion
699:philosophy
604:Amplifiers
543:comparison
258:7200 edits
131:suggestion
112:My motives
775:Resources
770:Group 68b
766:Group 67b
762:Group 66b
758:Group 65b
754:Group 64b
750:Group 68a
746:Group 67a
742:Group 66a
738:Group 65a
734:Group 64a
595:Flip-flop
242:principle
688:wikibook
539:addition
353:there is
275:current.
655:Gyrator
357:what is
783:, my
431:load.
75:paper
541:and
355:and
319:and
219:= -I
207:and
186:and
169:= -I
124:and
118:what
714:to
244:of
230:OUT
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161:= I
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126:why
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69:of
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171:IN
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228:V
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20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
