Electronics industry news

Electronic product launches

Formulae and Data

Q Quality Factor

The Q or quality factor of tuned circuits and circuit elements is a key parameter in many RF and other applications. Find out what it is and what the basic equations are. Read more . . .

• SUMMARY: Inductor Q factor
• SUMMARY: Q in RLC Circuits

Cellular Telecommunications

Private Mobile Radio / Business Radio Overview

Private Mobile Radio used is widely used for business applications - everything from taxis, utility services through to the emergency services. They require facilities that cant generally be accommodated by the cellular systems and therefore Private Mobile Radio / PMR is an essential element of the telecommunications scene. Read more . . .

More in CATEGORY

• TUTORIAL: TETRA radio
• TUTORIAL: TETRA Release 2 & TEDS
• TUTORIAL: DMR Digital Mobile Radio
• TUTORIAL: dPMR

Circuits & Modules

Transistor Active High Pass Filter

This circuit provides an easy way to create an active high pass filter using a single transistor and a few other components. It can find uses in a number of different applications. Read more . . .

• CIRCUIT: Op-amp high pass filter

Electronics Components

Resistor Types

Resistors are used in quantities of billions every day in electronics manufacture. While they may appear to be relatively "low tech" they are nevertheless important and they have been developed over many years to provide very high levels of performance and reliability. The choice of the correct resistor is often important in many electronic designs. Read more . . .

• SUMMARY: SMT resistor
• SUMMARY: Preferred resistor values

Test and Measurement

Analogue Multimeter

While the digital multimeter is more widely used, the analogue meter may still be found in many laboratories and will still give a level of performance that is more than satisfactory for most applications. Find out more about these meters and their specifications. Read more . . .

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• SUMMARY: Analogue meter specs

RF Topics

RF Combiners, Splitters and Hybrids

Couplers, combiners and splitters are widely used in RF applications enabling RF power to be split, combined, or small amounts to be extracted all within an impedance matched environment. they are essential to the operation of many RF circuits. Read more . . .

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• SUMMARY: Resistive splitter combiner
• SUMMARY: Wilkinson splitter

Electronics Manufacture

Guide to Choosing an EMS Partner

Willie MacKinnon, Vice President, Plexus, outlines the questions every medical OEM should ask before appointing an EMS Electronics Manufacturing Services partner. Read more...

Test and Measurement

Digital Multimeter

The mulitimeter is the most widely used item of test equipment. Although both analogue and digital versions are available, the digital multimeter, DMM is the most common. With today's technology, the levels of accuracy achieved using DMMs is very high. Read more . . .

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• SUMMARY: How a DMM works
• SUMMARY: DMM specifications
• SUMMARY: DMM accuracy

RF Topics

Centralise Your Adaptive Traffic Management

Chris Koopmans, Chief Operating Officer, Bytemobile looks at the key issue of traffic management on modern cellular telecommunications networks. Read more...

Electronic Design

Electrostatic Discharge - ESD

Electrostatic Discharge, ESD is a major concern to anyone working with electronics components these days. It is important for anyone working with electronics equipment to have a good understanding of it. Read more . . .

• SUMMARY: ESD control process
• SUMMARY: ESD design guidelines

Telecommunications & Networks

USB Universal Serial Bus

The USB, Universal Serial Bus is one of the success stories of networking and computer technology. USB is small convenient and it works - no intervention is required in terms of set-up. Even the connector is straightforward - it is robust and has few connections. Read more . . .

More in CATEGORY

• TUTORIAL: Ethernet

Test and Measurement

In Circuit Test Overview

While many forecast the end of In-Circuit Test many years ago, it is still a technique that is widely used for production testing of many boards today. ICT has many advantages - it is quick and easy to use, and as such is an essential tool for many environments Read more . . .

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• SUMMARY: In-circuit testers
• SUMMARY: ICT fixtures - bed of nails
• SUMMARY: ICT design for test

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