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Analyzing the Frequency Spectrum of our Distortion Circuits.

The Output Wave Shape of the Diodes in the feedback Circuit.

Now that we have a way of calculating the frequency spectrum of the output from Qucs we can look at the harmonics created by our distortion circuits. The one I was most interested in was the output of the one created by diodes

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Sprouting Fuzz part II – Clamping a Signal

A clamp in the feedback circuit.

In the last post we added distortion by simply over-driving an amplifier to the point where it clipped, or squared-off the top of the waveform. It basically said…”that’s all I can do… I can’t do no more”. In this post and video I show two simple op-amp circuits

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Sprouting some Fuzz. Creating Distortion in an Amplifier

An amplifier Clipping a Sine Wave.

Finally we are back to circuits and not just talking numbers and math! First, we will do a little summary of what we have recently talked about. Any repeating waveform can be derived from a sine wave and one or more harmonics of that sine wave. A harmonic

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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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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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The Thermistor Board is Calibrated!!!

Final Calibration.

The Thermistor Circuit Board is Calibrated! I was able to successfully calibrate it at 0 deg C and 70 deg C. Now is the time to think about what went right, what went wrong and what is the next step, both for this blog and with this project.

What Went Right!

First,

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Bode Plots – Phase Margin and Gain Margin

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Generic Feedback Block Diagram

Sometimes it is very hard to not get “the horse ahead of the cart”. Very often in projects and design as well as learning multiple things must be accomplished at the same time, yet one of those laws of nature is matter can only be at one place at one

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Update on testing the thermistor circuit board.

The final version of the circuit.

All the troubleshooting is complete and the circuit is working well. They say experience is the best teacher… just too bad it comes too late. My dad has a related saying: “Experience is the best teacher, but it is a heck of a lot easier if it is

Continue reading Update on testing the thermistor circuit board.