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Happy New Year – 2013

My very best wishes that everyone have a Happy 2013.

New Years for me has always been a time to look back on the previous year and set goals for the next year. I never set resolutions, just goals, because things change too fast.

Much was accomplished, I personally learned a lot and

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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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Learning the Arduino – The thermistor circuit.

Block Diagram of the Thermistors.

Way back there in November in a post called “Goals of Calibration of the Thermistor Circuit“, I used the diagram to shown in picture 1 to explain how I intended to linearize and calibrate the thermistors. I made one almost fatal mistake…I changed my mind. Seriously, I had intended

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Some Common Uses for Capacitors.

A circuit with both AC and DC Sources

In the last electrical post, “Capacitors and Alternating Current“, I promised to talk about some very common uses for capacitors. Separating AC from DC is a very common use for capacitors.

The circuit diagram to the left shows a 5 V DC source combined with a

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Using CAD in initial design – More work on the Popsicle Crane

The Base Drawing of the Crane.

People normally think of CAD drawings being used to produce finished plans. While that is probably the main use for drawings, CAD is very useful in all stages of design including conception and analysis. I have decided that I will do more work on the Popsicle Crane and

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Some kind of bug is going around here… and I have it.

I probably will get very few posts out this week… I am sorry but I am running on empty…



Capacitors and Alternating Current.

Rate of Change in a Sine wave.

One of the important concepts I hope I have driven home in the two previous posts about capacitors is the current in and out of a capacitor is related to how much difference there is between the source and voltage stored in the capacitor. We are going

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Some very easy projects and status of the others.

Marble toy for Granddaughter.

All this design work gets tiring. Sometimes it is just nice to pick up the tools and “throw something together”. That is exactly what I did with these two projects.

On the first one, the marble machine, my Granddaughter was visiting and I wanted to create something to play with

Continue reading Some very easy projects and status of the others.

Capacitors – Some more specifics.

Capacitor in a Switched DC circuit.

In the post “Energy Storage – Capacitors – Equalization of Pressure“, my main interest was presenting some analogies. In this post we will start talking some specifics. In that post I embedded the video incorrectly you may find it here: you tube capacitance video

A capacitor can

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An overview of heat solar collectors.

Solar Energy Concepts

In the last post, “Where is the biggest bang for the buck in solar energy?” , I hope the data was convincing that the best place to use your time and money is toward heating your house and possibly the hot water you use. Tonight’s post is going to work from

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