This category covers:
Devices, components, assemblies and hardware associated with the design and development of electronic equipment. Includes active and passive components, enclosures, interconnection, optolectronics, power and subassemblies.
Latest Category News
Linear Technology has released the LTC3639, a 150V input-capable synchronous buck converter that delivers up to 100mA of continuous output current. The device’s internal high side and synchronous power switches, drawing only 12µA at no load while maintaining output voltage regulation, make it suitable for always-on battery-powered applications.
According to Linear Technology, the safe, fast charging of nickel cadmium (NiCad) batteries is required for many applications. A short charge time requires high current. A potential difficulty with high-current charging is battery heating. Excessive internal heating degrades the battery and can cause gas venting to the outside atmosphere. Fast charge schemes based on monitoring cell voltage during charge suffer because cell voltage is not necessarily indicative of the battery’s charge ...
The leakage current of a solid tantalum capacitor is the sum of several independent factors. From measurements of leakage over a range of test conditions, some degree of separation of these components of the current can be achieved and so the relative importance of factors leading to high leakage can be assessed. There is a background level present directly related to dielectric absorption and it contributes to the loss factor of the capacitor. It is not a true leakage. On top of this ...
Solder pad geometry for surface mounting chip capacitors has been examined visually for three types of defects. Visual defects observed as a function of solder pad geometry were opens, misalignment of chips (rotation) and drawbridges. Geometry of the solder pads was seen to play an important role in the visual defects observed. Of particular importance were the overlap of the pad and the capacitor, the width of solder pads and the extension of the solder pad outside the capacitor (in ...
Technical article: Solartron Metrology focuses on laser triangulation for linear measurement download
Laser triangulation units use the reflected angle of the projected laser to determine measurements, giving a higher degree of accuracy along a wide measurement range. One such unit — Solartron Metrology’s Orbit LT — provides users with a cost-effective system for linear measurement applications.
A substantial percentage of regulator requirements involve stepping down the primary voltage. Although linear regulators can do this, they cannot achieve the efficiency of switching-based approaches. The theory supporting step-down (‘buck’) switching regulation is well established and has been exploited for some time. Convenient, easily applied ICs allowing implementation of practical circuits are, however, relatively new. These devices permit broad application of step-down regulation ...
The dielectric breakdown of HV bushings is one of the most frequent failure causes for power transformers. This white paper from Omicron Electronics discusses new diagnostic methods to assess the dielectric condition, including the analysis of the dielectric response and partial-discharge (PD) measurements, and includes several case studies. Practical examples illustrate the importance of capacitance, dissipation factor and particularly dielectric response measurements on HV bushings.
Reliable, high-yield SMT assemblies are easily realised if time is taken in the beginning to ensure yields and reliability. You cannot slap components down on a PC board with solder and hope for manufacturability; the PC board must be designed to be manufacturable.
Business and organisational processes rely on information technology and this in turn requires a clean source of stable and reliable electrical power. The increasing demands for power on the UK electricity grid are placing unprecedented pressure on an ageing infrastructure and this is becoming even more evident in heavily populated areas such as London’s Canary Wharf. Here, demand for electrical power is greater at times than can be supplied to power data centres and IT operations.
Latest Product Downloads
The LTC3639 from Linear Technology is a 150V input-capable synchronous buck converter that delivers up to 100mA of continuous output current.
The LTM4637 from Linear Technology is a 20A DC/DC step-down µmodule regulator suitable for applications such as industrial and medical equipment and networking and telecommunications systems.
The 220-page full-colour 2013 Enclosures and Knobs Catalogue from OKW Enclosures includes information on functions, PCB dimensions and application recommendations for the company’s range of plastic enclosures, as well as tuning and control knobs.
Linear Technology is offering the LTM8028, a 1mV-output-ripple µmodule regulator designed to power data converters and high-speed transceivers.
The LTC4270/LTC4271 chipset from Linear Technology is a 12-port power source equipment (PSE) controller designed for use in IEEE 802.3at Type 1- and Type 2-compliant Power over Ethernet systems.
The LTC4290/LTC4271 isolated eight-port power source equipment controller chipset from Linear Technology is designed for use in IEEE 802.3at (Power over Ethernet, or PoE) Type 1- and Type 2-compliant PoE systems.
This application note from Circuit Design presents a wireless audio module wiring example. It focuses on the WA-TX-01 wireless audio transmitter and the TA-RX-01 wireless audio receiver.
The RoHS-compliant 210 series of connectors from Fujitsu Photonics is designed for board-to-board connection. It has an operating range of -55ºC to +105ºC, a current rating of 2ADC and a voltage rating of 250VAC.
Data sheet: feeder pillar from ICEE download
ICEE is offering a feeder pillar manufactured from mild steel or stainless steel. Features include single front-door entry, triangle key locks and concealed hinges.
The half-height 699 cabinet from ICEE is manufactured from stainless steel and features removable lifting eyes within the roof to simplify installation. The roof is sloped away from the electrical bay to prevent water ingress on access.