A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.

How a beam resists bending. (Moment of Inertia)

Rubber Band simulation of a beam subjected to bending.

In the post “Stress, Strain and finding center“, I talked about simple compression and tension and how beam or column elongates under tension and shrinks under compression. In the elastic portion of the stress strain curve the beam is acting like a very very strong

Continue reading How a beam resists bending. (Moment of Inertia)

Hop on the Bus Gus…. Make a new Plan Stan.

Cryptic title to a pretty much silly post. I want to apologize that posts have been coming out slowly lately. Life has gotten in the way. But things are starting to come back into order and I will be able to post more regularly.

Now the meaning of the title. In a recent post I

Continue reading Hop on the Bus Gus…. Make a new Plan Stan.

Our Op-Amp Circuits Input Impedance.

No Chip (or man) is an island.

In a post awhile back, The Load affects the Process. (Electrical Theory and More, I talked about how the input impedance of a voltmeter could affect the voltage readings of that meter. That same concept is back again, only life is getting a little more complicated. This

Continue reading Our Op-Amp Circuits Input Impedance.

The centroid (center) of a beam.

Several posts ago I talked about finding the center of mass of an object. That procedure when applied to a flat surface (a plane) is used to locate the point called the centroid. The the plane is a flat plate made completely from a uniform material, the centroid is where a pin could be

Continue reading The centroid (center) of a beam.

Stress, Strain and finding center.

Stress – Strain curve for metal.

This is the first of what will probably be three posts on the theory about the loading of beams and columns. This is why I am building the popsicle crane boom in the way I am doing it.

We have been tied up in details lately, so I

Continue reading Stress, Strain and finding center.

Ground, Common, Neutral, Reference, and Buses

Common Symbols – in Common Use(No that is no typo… hahaha)

Today I am fussing and cussing while working on my car and while doing that I thought “I sure hope it is not a ground problem”. At that point I remembered I stumbled over that word in my last post. So, as much

Continue reading Ground, Common, Neutral, Reference, and Buses

Building and testing the simple amplifier Op-AMP Circuits

Header_134

The Op-Amp Circuits under test.

We have talked a lot about Op-Amps and DC electricity. It is now time to build something and test it. Hopefully no smoke is released! Before talking about the circuits I have realized I did not describe how to use the test board I recommended so it is time

Continue reading Building and testing the simple amplifier Op-AMP Circuits

Popsicle Crane Update

Cutting a Popsicle Stick

 

Details, details details. Details seem to be everything, but sometimes you don’t even know the details you need to know. Since constructing the popsicle test tower I have learned a lot. Unfortunately, there is not yet a lot to show because I am working slow and methodically to do

Continue reading Popsicle Crane Update

An actual OP-Amp Data-sheet.

STmicroelectronics MC4558 Op-Amp Schematic

It is time to start “getting real” in our talk about OP-Amps. So far we have talked about ideal OP-Amps with infinite input resistance, infinite gain, zero output resistance. Often, as with the multimeter that is “good enough”, but often those assumptions can fall short.

Tonight’s post is about an

Continue reading An actual OP-Amp Data-sheet.

Voltage Regulation and Power Loss

Real PS & Load

This is one of those posts that is this hard of me to categorize and actually even to give a title because there is so much to say about so little. However, it is very important for several reasons. First, we will be talking about energy conservation. Second, it is

Continue reading Voltage Regulation and Power Loss