News/Facts

General news and facts related to the fields power-supplies and power-regulating products from sources on the Internet that conveys news and facts that are considered to be of interest.

New technologies and research

LED with 170 lumens per W may be possible
New method reduces the reduction of effectiveness in LED

New technology produces switched power-supplies in the size of matchboxes

Brilliant wallpaper

White organic light diodes provides 102 lumens / W at 100 cd/m2

Major benefits of LED lighting in a large urban environment report shows

Development with support from the EU of cost-effective volume-production of LED

New technology provides flat, thin and light LED lighting

AC-powered LED provides 50 lumens / W
New technology offers OLED lighting in size up to 100 cm2

Methods to deflect the heat from light diodes

Research Breakthrough, silicon carbide that can do 110 kVA will revolutionize powerdistribution in HVDC

Power and power supply

Research on electronic transformers

Many PC:s can lead to overheating transformers and overloaded zero in commercial buildings report shows

Transformers basics

Toroidal transformers

Transformer Concepts

Switched power-supplies

Standards

Two new standards for LED
Generic EMC Standard EN61204-3: 2000 For Power Supplies Products
New Version for EN/UL/CSA60950:2000
Lighting product certification for Poland

Technical information, other
Wolfram Alpha - Search engine for formulas, mathematics and technology
Maintenance of oil-insulated transformers
Factbank
Transformer insertion loss and frequency response
Transformer polarization