tony lee

name Amy Cheung: Senior Engineer from Longjann Tech http://www.switchpoweradapter.com Functions on cutting edge technologies for LED lighting electric power supplies/drivers that will deliver long term proof alternatives for dimming, software schemes, digital functions and capabilities.

Technology

Why LED Lighting Is Not In Your Housing Yet?

01st June 2011
Not like incandescent bulbs, high-electrical power LEDs cannot be just plugged into a wall socket. Several businesses are functioning to defeat the technological and economic problems by building LED light fixtures and retrofit LED lights products employi... Read >
Home-and-Family

Ten Benefits to Use LED Lighting

23rd May 2011
Traditional lighting systems have been replaced by LED powered systems at an accelerating rate. You can find factors behind this, but firstly, so what is an LED? LED stands for Light Emitting Diode - a semiconductor device that exhibits properties to prod... Read >
Computer Hardware

what are switch mode power supply

23rd May 2011
An issue of linear power supply often is the size and weight of this transformer. The size is required due to the low frequency (50 to 60 Hz). For the similar power output, the transformer size goes down as the frequency rises (up to a point). The SMPS ta... Read >
Computer Hardware

What really is AC adapter

16th May 2011
You use them daily from your note book; you use them with your mobile phone, and even with your printer or other networking devices. But what exactly are they and why should you'll need them?Why can't I simply plug my laptop straight to the wall outlet?... Read >