Mind Matters Natural and Artificial Intelligence News and Analysis

# TagElectronics for Beginners (book)

## Circuit Patterns, Part 2: Voltage Dividers

Pretty much any time you see two resistors connected in series with a wire coming out from between them, you are witnessing a voltage divider in action.

In yesterday’s installment, we talked about the importance of circuit patterns, both for understanding the circuit schematics that you might find on the web and for building your own circuits. This series introduces some of the commonly used circuit patterns that are essential to electronics. The first installment covered the most basic resistor pattern, the current limiting resistor. In this article, we are going to look at another basic resistor pattern the voltage divider. Voltage dividers work because resistors, while they limit current, also eat up excess voltage. An LED, for instance, will tend to only eat up a few volts. The excess voltage left over will quickly lead to an overabundance of current. That is why, to work properly, Read More ›

## Circuit Patterns, Part I: Understanding Circuit Schematics

You will get on much better in electronics if you learn to see the schematic line drawings as a series of patterns

When I was young, I wanted to learn how to build electronics. I bought a large number of books from Radio Shack and read them all, cover to cover. Unfortunately, the books that I read helped me to understand a little bit about the periphery of electronics but not the core subject. I learned what each type of part did in general resistors, capacitors, transistors, inductors, etc., but I never really understood how all of the pieces fit together. How do you go from understanding the parts to understand how they fit together into a circuit? Throughout my life, I have returned to electronics now and again, sometimes personally, sometimes professionally. I eventually learned that most electronics follows basic patterns Read More ›

## New Electronics Book Honors Citizen Scientist Forrest Mims III

Jonathan Bartlett’s dedication reflects Mims’ immense influence on electronics enthusiasts—including himself, as a boy

Forrest M. Mims III (pictured) has been an icon for many decades to two hobbyist movements: hobbyist electronics and citizen science. Anyone who used to visit Radio Shack in its heyday has probably seen and/or benefited from more than one of Mims’ books. Mims’ most prominent claim to fame was his series of Engineer’s Mini-Notebooks, small volumes that diagrammed circuits and their components and designs. Most hobbyists had a large collection of these notebooks and eventually they were collected into the book Getting Started in Electronics. Mims has also been one of the most prominent “citizen scientists.” A citizen scientist engages in science without the backing of a degree or institution, for the love of discovery. Mims is famous for Read More ›