Waxy vs. Starchy Potatoes

Culinarily, potatoes tend to be classified as either waxy or starchy (sometimes called mealy), based on their moisture and starch content. Each type is good for some things and bad for others. Knowing the difference between them can help you choose the potato that will be most successful for a given application. Waxy Of the … Read more

Active Components – Voltage Regulators

Add power to activate. Active components require a power source to affect a circuit.   As the name would imply, a voltage regulator maintains a consistent voltage, below the supply voltage rail. They come in several form factors, and are available for both positive and negative voltage, but all essentially do the same thing: dump … Read more

Active Components – Operational Amplifiers

Add power to activate. Active components require a power source to affect a circuit.   Operational amplifiers (op amps) are a basic component used for a variety of voltage manipulation purposes. The standard configuration for an op amp has one noninverting input, one inverting input and an output. An inverting input will produce the opposite … Read more

Surface Mount vs. Through Hole

 When thinking about circuit design, there are two really, really high-level categories to consider: through-hole and SMD. Through-hole is the traditional component style that has conductive leads that are fed through holes (roll credits) drilled in a circuit board. The leads are then soldered to conductive pads that surround the hole, and the remainder is … Read more

Mamelons (aka Pervy Dentists)

Mamelons are little bumps on the cutting edge of your incisors (front teeth). Everyone has them when their teeth first erupt–it’s what helps the teeth break through the gums. For most people, mamelons naturally wear off through usage, over time.    Some poor kids mamelons…   I filed mine down, because I hated them. But, … Read more

(Fun?) Facts About Eyes

I recently had LASIK procedure to correct my myopia (i.e., nearsightedness). Prior to that, I learned a few fun facts about eyes and prescriptions for eyes. Visual Acuity When people think about their vision, they often think of it in terms of a comparison to an ideal “20:20” vision. But, really this just means “normal” … Read more