How To Make Your Own Ethernet Cross-Over Cable (7 Steps)
Oct 12, 2017 · Step 7. Lastly, repeat for the other end but using diagram B instead. To test it, plug it in and attempt to connect two computers directly. While LEDs differ by the device, one should show activity and the other should indicate speed. If you would rather buy a crossover cable, take a look at our selection.
Throwback Tech: 20 Old Products Modern Technology Replaced
Dec 2, 2013 · 12. Rounded TV screens. Older TVs operated from photons being fired from a photon gun in the back of the TV, hitting the screen in such a way to produce color pictures. The screens were rounded to provide ample distance from the electron gun (cathode) and the screen. Newer flatscreen models do not use this technology.
Why doesn’t the US use 220V like everyone else in the world?
Sep 30, 2016 · First is the idea that the United States is the only country in the world to use the 120V 60Hz standard. The fact of the matter is that there are many other countries that primarily use 120V. To this end, there is no “everyone else in the world”. Some countries use 240V, some 230V, others 220V, and so on.
Motor control design: an introduction to motors and controllers
Dec 6, 2019 · The main difference between the two types of motors is speed control. The speed of a DC motor is controlled by varying the current of the armature winding, while the speed of an AC motor is controlled by varying the frequency, which generally occurs with adjustable frequency control. In addition, the absence of the collector allows the AC motor ...
What It’s Worth: Vacuum tubes worth more than the tube tester
May 2, 2011 · This was one of the first tubes available for consumer radios. A working early Aeriotron WD-11 can easily sell for up to $130 in today's collectors market. If it's not working it still is a valuable display item to a collector and a $75 to $80 selling price is not uncommon. In the early 1950s the transistor appeared.
Throwback Tech: Old school cell phones - Electronic Products
Dec 6, 2013 · Electronic Products celebrates Throwback Thursday by taking a look at vintage cellular devices. We can all recall our very first cell phone. I remember vividly that mine was the Nokia 918. Google “ Nokia Brick,” and you’ll see it. If I dropped by phone, the only damage that would occur was to the floor, as the phone would stay fully intact.
What is Transient Voltage? - Electronic Products
May 24, 2013 · Transient voltage definition. Voltage Transients are defined as short duration surges of electrical energy and are the result of the sudden release of energy previously stored or induced by other means, such as heavy inductive loads or lightning. In electrical or electronic circuits, this energy can be released in a predictable manner via ...
Top 7 USB Oscilloscopes For Any Budget - Electronic Products
Jun 10, 2019 · The PicoScope 5000 series represents the most powerful of the USB PC-based oscilloscopes covered in this article. The series offers both two- and four-channel scopes and bandwidth choices of 60 MHz, 100 MHz, and 200 MHz. The 5243D two-channel 100-MHz and 256-MS memory scope, priced at $1,615, is appropriate for comparison here.
Power Supply Failure: 5 Common Causes and Preventions
Aug 18, 2016 · Anything you can do to enhance thermal management around your power supply in the system is of critical importance. 1. Fans. Fans are the number one failure mechanism of power supplies, as found by both military MTBF simulations as well as Belcore standards and as both simulated and demonstrated in reality. As the only electromechanical moving ...
Inductors Explained: Types, Applications, and More - Electronic …
Jul 1, 2011 · Toroidal core. An inductor constructed by placing a winding (s) on a core that has a donut shaped surface. Toroidal cores are available in many magnetic core materials within the four basic types: ferrite, powdered iron, alloy and high flux, and tape wound. Characteristics of toroidal inductors include: self shielding (closed magnetic path ...