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Encapsulating the problem… Waterproofing the solder joints.

Coatings I tried to use to insulate the solder joints.

Almost everything in design is a compromise. Even something as simple as insulating wire connections that may be exposed to water. It always comes back to: “What are you trying to accomplish”, and even then often there are compromises. In the case of the

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Parallel Resonance Circuit and decibels.

Parallel LC “tank” circuit.

In the post “Series RLC Resonance – The effect of Changing R“, I talked about the Quality factor, Q. Q was defined as: Q= 2*π * energy stored per cycle / energy dissipated per cycle. Just like I did in that post we will take a look at what happens

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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.

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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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