My CircuitLab stories on StackExchange

At the beginning of this year, I started working with the CircuitLab simulator. Here is a list of links to my best CircuitLab stories so far:

How does a transistor inverter work? is my first CircuitLab story laid out in four consecutive steps (frames). There are no graphs of the simulations (the topic does not require it).

How does this rectifier work, since the op-amp input is 0 V? is my first full CircuitLab story, laid out in five "frames".  In addition to schematics, I have richly illustrated it with graphs  from the simulations.

Why do we need R1 in a non-inverting op-amp? is a lush story, in which I first applied schematic framing (to unify scale).

Need clarification regarding op-amp's ground/ reference and common mode dependence on supply is dedicated to the famous differential ("long-tailed") pair. To show the basic idea behind it, I have built it step by step.

How does an op-amp know where ground is? is another story dedicated to common-mode and differential-mode) signals, and differential pair.

Puzzled with parallel forward biased diodes with common anode and different cathode voltages is a long story in which I reveal the philosophy of output stages.

Non-inverting op-amp is a very long and richly illustrated story, in which I reveal the philosophy of the non-inverting and inverting amplifier.

Help me calculate voltage drops through this circuit is a CircuitLab story in which I reveal the ideas behind a common emitter transistor amplifier stage in three ways - by understanding, building and "inventing".

I have to find the relationship between Vout and Vin is a story dedicated to the follower, non-inverting amplifier and differential amplifier made using an operational amplifier.

Maximum voltage range for input in emitter follower is another amazing story dedicated to the output stages of electronic amplifiers.

Voltage divider equation tunnel diode - Art of Electronics reveals the mystical phenomenon behind the differential negative resistance  of tunel diodes.

Powering a negative resistance converter with an Arduino power pin reveals the idea of ​​the mystical "negative resistance converter".

How does negative feedback stabilize the output of an op-amp? is a unique inverting amplifier story in which I invent a new tool to "see" the voltage inside resistors.

How does an inverting op-amp feed back 0 V when Vout is not 0? is another unique story where I reveal the philosophy behind negative feedback op amps using an invented "tool".

Usage of input voltages in ideal opampis is another story devoted to the philosophy of negative feedback op amps.

How does this op-amp config work as a voltage follower? is a detailed story dedicated specifically to the voltage repeater.

How does one set the Q-point for a JFET cascode amplifier, and what are the correct "Idss" requirements for cascoded JFETs? is an amazing story about mystical cascode circuits.

Resistors values for class AB amplifieris a huge story devoted to counter-clockwise power stages in amplifiers.

Single-supply non-inverting op-amp for summing DC voltages at unity gain is a very detailed history of both types of summer s - non-inverting and inverting.

TTL NAND gate analysis is a different story than the previous ones because it is dedicated to the most basic NAND logic circuit.

Why is the voltage drop across the collector emitter junction of common emitter configuration the output voltage instead of that of load resistance? is an amazing story about the elementary transistor amplifier stage that I dedicated to jonk.

Series RLC - how does resonance amplify?is a story about how resonance "amplifies".

If multiple sources are parallel with the diode, why does the one with a higher voltage turn on? is devoted to diode switching circuits.

Comparator with hysteresis; what resistors go where? is a very extensive story of INIC negative resistance circuits.

Class AB crossover distortion diode fix is a comprehensive story with many illustrations devoted to diode bias circuits in flyback stages.

Clipper circuit in OpAmp takes a very detailed, step-by-step look at diode limiters.

Inverting op-amp problem examines in detail an unconventional amplifier using a common-mode input voltage.

Understanding biasing typologies of a class AB amplifier is devoted to the input biasing circuits of "push-pull" amplifier stages.

What is the basic idea behind the so-called "diamond buffer"? is a question given by me and accompanied by my answer.

Controlling one relay with three LEDs - energize relay if any one of the three LEDs are lit is a bit of an inventive solution.

"Source", "sink" or both? is another question asked by me and accompanied by my answer.

Do voltage multiplier circuits and transformerless power supplies have functional similarity? is an amazing story about transformerless voltage multipliers.

Diode connected BJT instead of a diode is a continuation of an old answer of mine in which I have added CircuitLab simulations.

How can I control PNP and NPN transistors together from one pin? is an invention story dedicated to the so-called "diamond buffer".

Diode-connected BJT vs base-emitter BJT diode vs diode is one of my strongest stories dedicated to the so-called "active diode" and the "current mirror".

Equivalence between diode and transistor is another very strong story dedicated to the "active diode".

Calculating resistance of a load inspired me to show how we can understand diodes and other nonlinear elements.

How does a current mirror work? is an amazing story dedicated specifically to the "current mirror".

How to toggle relay with single push-button is again a story of invention in which I managed to do the impossible - to alternatively command a relay by means of a button (electromechanical T trigger).

Do I need a pulldown resistor with a voltage follower? is an interesting story in which I reveal the peculiarities of the emitter follower.

Use LEDs to indicate voltage is another invention story where I show how to make an LED "ladder" powered by the input voltage.

Tie an input of an AND gate to its output is a story revealing the philosophy of the most basic RS latch.

What's the point of Vcc and Vee closed loop in op amp inverter reveals the truth about the so-called "coupling" and "decoupling" ("bypass") capacitors.

Output voltage level of TTL gate considers the output part of TTL logic gates by building the stage.

What is the role of the capacitor in clamper circuit? shows the connection between seemengly different diode circuits -  a clamper and half-wave rectifier.

Does changing the collector resistance of a common base amplifier have any effect on the current? is a comprehensive CircuitLab story about the common-base amplifier stage where I have built the circuit step-by-step.

Why does a common base amplifier give a non inverting output? presents the common-emitter and common base amplifier stage in an unconventional way - through the Wheatstone bridge circuit.

How does current affect voltage? is a story about the ubiquitous potentiometer.

Small circuit explanation is about a simple passive circuit containing resistors, capacitors and diodes.

Circuit analysis of op amp non-inverting integrator reveals the idea behind an exotic circuit solution of a non-inverting integrator.

Why does the current not divert in the inverting summing amplifier circuit? shows the basic ideas behind voltage summers.

Transistor functionality confusion creates a functional notion about the "transistor in a simple way through equivalent electrical devices. I have done it in six steps by building a conceptual transistor amplifier.

Transistor switching is a CircuitLab story about the transistor modes of operation

Flyback diode for a relay in a car explains how the flyback diode reduces the back emf voltage of a coil.

Control two LEDs with only one PIC output is a little invention of mine which is a minimalistic LED indicator circuit.

Is there a circuit to detect if a line is high-impedance? is another invention of mine which is a minimalistic LED indicator circuit.

(forever under construction)