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The op-amp integrator.

An Op-Amp Integrator

Now that we know about how capacitors perform and we have learned about the calculus operation called integration, we are finally able to go back to the basic op-amp circuits and talk about the one of the two remaining circuits. It has not been all that long ago that microprocessors where

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Complex Number Math – Sinusoidal Analysis

The circuit we are going to solve.

Tonight we will jump right into solving for the total impedance, total current, and the currents through and the voltage across each individual components. In doing this we will use complex numbers and as you will find is not all that complex to do. The circuit is

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Real Inductors and a couple of real life stories about them.

The magnetic field around a coil of wire.

When I started down this path of talking about inductors in the post “Through the looking glass – Duality – The Inductor”, I chose to make a big deal about how the magnetic fields build and collapse. That was done for several reasons. First the magnetic

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The Inductor – Part II

The Inductor circuit.

In the last electrical post “Through the Looking Glass – Duality – The Inductor“, I spent a lot of time building up the fundamentals of electromagnetism and what is going on inside the inductor. I also probably over-used the “twisted sister” analogy, but I will continue with that because we are

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Through the Looking Glass – Duality – The Inductor

The Inductor circuit.

Whenever you are learning something new it is best to compare and contrast with something you already know. Tonight we are going to talk about the inductor, the crazy sister to the capacitor. In a few ways this is similar, but being that she is crazy everything is different and she

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Modeling the Thermistor.

Steinhart-Hart thermistor equation

What is a model? Without taking the time to look up an official definition, I would say it is a representation of reality. (I am sure some women would like to argue that point with me, but when I wrote the definition, I was not thinking of THAT kind of model!

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Building and testing the simple amplifier Op-AMP Circuits

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The Op-Amp Circuits under test.

We have talked a lot about Op-Amps and DC electricity. It is now time to build something and test it. Hopefully no smoke is released! Before talking about the circuits I have realized I did not describe how to use the test board I recommended so it is time

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Top Dead Center and Singularity

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The Pedal 30 degs off T.D.C.

There is a mathematics term thrown around a lot by the “free energy” people and after the last post about the do-nothing machine, this is probably the best time to deal with it. The term is singularity or as used by them “the singularity point”. According to Wikipedia

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Scaling a Voltmeter (& an Ammeter)

A representation for our real 250 mV Voltmeter

In the previous post on Electrical Theory, “The Load affects the Process. (Electrical Theory and More)“, I introduced the idea that the load can affect the circuit. To show that we used a real life meter and datasheet and circuit designed to make things look really

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The Load affects the Process. (Electrical Theory and More)

A Simple Linear Flow Diagram

This started out as another post about electrical theory, but the more I thought about it the more I decided to make it also a more general post. This will get into specifics about electricity, but the general idea applies to almost everything we do and that includes much

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