diy

Passive Ethernet Tap

Construction and Use of a Passive Ethernet Tap article provides straightforward instructions on how to construct and use a passive Ethernet tap. It allows you to monitor Ethernet traffic on with any hub or switch and any operating system. A passive Ethernet tap is useful when installing an intrusion detection system (IDS) sensor or when

Digital audio isolation

Isolator for digital audio is needed in cases where coaxial S/PDIF digital audio link forms a ground loop in your audio system. Typically in coaxial S/PDIF connections the coaxial cable shield is connected to equipment cases. This arrangement easily creates ground loops which can cause noise problems in various places in audio system. A suitable

Build a Ground Loop Detector

Ground loops are a common problem in many experimental setups. A ground loop is an un- wanted closed loop of cables in the setup, most often through the ground system. Those ground loops are often hard to find and debug. A Ground Loop Detector document describes how to build and test a simple system to

Power Everything with USB

9 Kick-Ass DIY Projects to Get Your Hack On article on maximumpc.com web site starts with instructions how to alter a non-USB gadget so that it can be run off of USB power from your computer. The article shows you how to use USB to power a desk fan and book-light lamp.

Build video isolator

Video isolation transformers are primarily used in CCTV application in fields of security, manufacturing, avionics and display. The video isolation transformer is an extremely broad bandpass 1:1 isolation transformer. Its hum isolation is very good and it can sustain very high noise voltages without degradation. Isolation decreases with increasing noise frequency. Video signals can transformer