What analog designer hasn't had to derive a nonstandard resistor value by using series/parallel combinations of standard resistor values? In efforts to avoid a production trimpot tweak, we can use 0.1 percent resistors when we need precise voltage dividers. To obtain non-standard values, two or more resistors in series work well -- the total resistance ...
Yesterday in When Wires Become Components, we saw the care that goes into making calibration-grade resistors and inductors. Today, we'll take a further look at IET Labs.
You probably have a resistor decade box in your lab used to find the best fixed-value resistor for an analog circuit. You may also use a decade box to verify the functionality of a circuit or system under load.
In Basics of Signal Spectra, Part 1, we looked at signal spectra for a square pulse, square wave, a short data pattern, and a longer data pattern. I showed how you can develop an intuition to what the corresponding spectra looked like for any binary, non-return-to-zero data pattern.
While researching my blog Measure Passive Components, I ran across an application note, "Skin Effect on Wire," from IET Labs. The note explains that AC signals tend to ride on the outer surface of a wire. The higher the frequency, the more the current moves to the surface. The note explains why skin effect is a problem, but doesn't say why the skin ...
Active-matrix organic light-emitting diodes (AMOLEDs) are very common in consumer applications such as smartphones. You'll find these diodes in the displays of the best-selling Samsung S3 and the new Samsung S4. When sold separately, these displays are known as Super AMOLED displays, because of the quality of their colors and their exceptional ...
5/18/2013 4:36:50 PM
DJ on Design Ideas: A Wealth of Circuits
|
 |
|
Tweet This
