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The Electrical Part of a Loudspeaker.

The cross section of a Loudspeaker

Dearly beloved we are gathered here today for a divorce. Well, sorta. It is not just a simple divorce we are going to keep the parts we want and deal with the other parts at a later date once we want to complicate our life. Seriously, the

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The importance of Phase in the frequency plots.

The Lowpass filter for this discussion.

We have been talking about the phase shift when creating frequency plots, but it has not been given a lot of importance. Other than power-factor it really has not affected us that much. We have been mostly interested in the gain plot. That is just about to change.

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Let’s get tanked and resonate with the twisted sister!

Parallel LC “tank” circuit.

Yeah, I know it is a strange title! Actually there is a good reason of this title. Traditionally a parallel LC circuit is called a tank circuit because it is similar to water sloshing in a tank. The twisted sister part has to do with the duality principle I have

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Complex Number Math – Sinusoidal Analysis… the much easier way.

Copy and Paste: Ctrl-C, Ctrl-V

If you have followed the last couple of posts about phasors,”Vectoring in on a Solution – Phasors” & “Complex Number Math – Sinusoidal Analysis“, you are probably in agreement that sinusoidal analysis it can produce some very nice detailed results. Hopefully you are also in agreement that the

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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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Vectoring in on a Solution – Phasors

Graphical representation of phase and amplitude.

Mathematics is really a bag of tricks to try to represent real and actions a provides a way to calculate and predict things. Over the next 2 or 3 posts I am going to arm you with a new set of tricks. However, it will be necessary to

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Series RLC Resonance – The effect of Changing R

The series RLC circuit.

It is my sincere hope that my last post “Two, Four, Six, Eight We are going to Resonate” resonated well with you. (Sorry about the pun, sometimes I can’t help myself.) In this blog post I am going to build upon the last one and expand it just a little.

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Two-four-six-eight. We are going to Resonate.

The series RLC circuit.

In the last post “Electrical Noise part 2” I talked about tuned circuits. Today’s post will be the first of several that talks about tuned circuits and resonance. Today’s post will be very general and will talk the normal stuff. Electricity is the same, no matter if you are talking

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Electrical Noise part 2.

A farewell lunch for yours truly — This is not the way to do shielding.

In part 1 of electric noise I talked about simple but effective ways to keep the bad out while allowing the good to flow. Those methods are effective when they can be used, but often it is impossible. For

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Electrical Noise

twisted wire Header

An unshielded twisted pair.

Noise is a hassle in just about everything and in electronics and electrical circuits it is no less of a concern. However, it is something we can handle with some planning and if that fails a little knowledge will get us a long way to figure out a “work around”

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