The secret to sending analogue video signals over UTP is to balance them well. Video balun is a device made for this. I earlier write about Video over UTP and my own experiments related to it. Here is a look wat what is inside a commercially made inexpensive video balun, in this case LLT-201 from →
Traditionally analogue video transmission is done using 75 ohm coaxial cables. Those video signals are not directly compatible with nowadays more widely used twisted pair wiring (CAT5, CAT6 etc..), which means you just can’t wire the signals directly form video output to a twisted pair wire. The mains problems in connecting 75 ohms video source →
EDN Magazine blog has an interesting series on posting on software tools available to engineers that make our lives easier. Check out those postings to get to know a large number of electronics engineering related software (most of the software mentioned on postings are free and open source). An engineer’s software toolbox – Part 1 →
Do engineering videos grab your interest? What is the correct way to advertise an engineering product? Which is the better MCU pitch? Song-and-dance or dog-and-pony video? article asks if traditional dog-and-pony show or uptempo song-and-dance style is a better way to advertise a micro-controller. Because this is a Friday post, I will link here that →
Build your own metal detector article mentions a pretty interesting Diy Arduino based metal detector. The article starts with with an explanation of how most oscillator based metal detectors work. Most metal detectors uses a search coil that act as part of an oscillator circuit. When metal is put in proximity of the search coil →
The fields of electronics, computers and telecommunications is filled with acronyms. To help in surviving on this world of acronyms I started to compile in the 1990′s my own list of acronyms, and you can find my collection of acronym definitions (over 19000 definitions) at ePanorama.net acronym search. You should be able to find most →
An H-bridge is an electronic circuit that enables a voltage to be applied across a load in either direction. They are useful in many applications, especially when you need to make a DC motors to run forwards and backward. H-bridges are available as integrated circuits, or can be built from discrete components. Here are first →
I have many times found ULN2003 and ULN2804 transistor arrays to be very useful components when I want to control some loads like relays, small electrical motors or light bulbs from TTL circuits. I have for example used ULN2803 for many applications where I have needed to control something with PC parallel port. The interesting →
USB was originally designed for desktop use, but it is increasingly used for industrial applications. For USB to survive in those environments, it needs to be made more rugged. It means that ruggedizing USB for ground loops and using better (more protection and better locking) connectors are often needed. Ruggedize USB connections for tough environments →
Shields are your friend, except when… article tells that engineers just love to put shields on circuits, mostly as a defensive measure against signals on the outside getting into and disturbing our circuits, but they also keep signals inside from getting out and this really makes the folks responsible for EMI compliance happy. Even on →