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Field Effect Transistor Theory – Part 2

JFET symbols

In Part 1 we introduced a conceptual diagram of the construction of a JFET and talked about what happens if the gate voltages is changed in comparison to the source while the drain to source voltage is kept at a low value. Today we are going to start out talking about what

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Field Effect Transistor Theory – Part 1

JFET symbols

As we continue to work through the Desulfator circuit we only have one device left that we have yet to talk about and that is the MOSFET. A MOSFET is a type of Field Effect Transistor (FET). Tonight we are going to point the ship toward understanding it, but to understand the

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Drawing the Schematic for the Desulfator in Kicad.

The Desulfator Schematic in KiCad

HAPPY NEW YEAR! Usually this time of year I think about what I accomplished in the last year and also where I want to go in the next one. I have been so busy this season that I really have not given it as much thought as usual. However,

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The 555 Timer I.C. Datasheet Explained – Part 2

The specifics of what is talked about in the video.

This is the 2nd post and video describing the 555 Timer I.C. The first post was “The 555 Timer I.C. Datasheet Explained – Part 1“. I finished up all of the important information about the chip and external components in this video. The Desulfator

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The 555 Timer I.C. Datasheet Explained – Part 1

LM555 Block Diagram

The heart of the Desulfator is based around a 555 timer. The 555 Timer I.C. is a very old and proven circuit and I can remember it being used in the 1970’s when I was an electronic technician. This the first of probably three posts talking about the 555 timer datasheet.

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Introduction to Bipolar Junction Transistors – Part II

A testing biasing circuit for a PNP Transistor

Tonight’s post is a continuation of the previous post “Introduction to Bipolar Junction Transistors“. In that post I talked in detail about the current flow in an NPN transistor, this post will start out with the same detail about a PNP transistor. Later I will extend

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Introduction to Bipolar Junction Transistors.

Bipolar Junction Transistors

It has always been my goal on this site to present information to help to understand every project I attempt. I am currently working on the Desulfator. Although I am primarily taking the design of someone else and building a printed circuit for it, both you and I need to know

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The Op-Amp Differentiator.

The Basic Op-Amp Differentiator.

A common insult is the term “get real”. The way we have been learning all of these electronic circuits is to start with the ideal and then add one by one the real life problems of real components. Real life is going to smack us in the head very quickly

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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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An Op-Amp Datasheet part 2 – AC Values.

Non-Inverting Op-amp Amplifier

Several months ago I introduced op-amps to readers of this site with “The Non-Inverting Op-Amp Amplifier“. At that time we had only talked about D.C. Electricity. We started with an “ideal Op-Amp” and then I brought us back to reality and created a video about an op-amp datasheet. Since that time

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