Japan's Toshiba Lighting Technology Co., Ltd. released the company's self-developed concept of "Weluna" on October 27. Toshiba's search results show that the higher the value of Weluna, the stronger the "lightness of space". According to the company, since the brightness feeling can be quantitatively expressed by the Weluna concept, it is possible to propose an illumination space scheme that combines comfort and energy saving without damaging the space impression.
According to reports, in the light perceived by the human eye, the light that directly illuminates the eye from the light source is removed, and the illuminance of the outer portion is numerically represented by Weluna, and the unit is lux (lx).
For example, in the office, the work surface illumination is set to 500 lux, and the Weluna value that people do not feel dark is verified, and it is found that if there is 60 lux, an appropriate brightness feeling can be obtained.
Toshiba used the software developed in the lighting design project to calculate Weluna. At the lighting scene, an image of a 180-degree field of view is taken using a digital camera equipped with a fisheye lens, and the value of Weluna is obtained from the image.
In addition, Toshiba has opened the experience lab "CO-LAB" for LED professionals on November 4th, where you can experience the concept of Weluna. The facility is not just a showroom to showcase new products, but also to experience the space that changes due to light and light selection, while exploring the best bright experimental sites.
CO-LAB is divided into two spaces: "Site-01" and "Site-02". The "Site-01" of "CO-LAB" can be used for the simulation experiment of LED high ceiling appliances, and the light diffusion method which changes with the height of the ceiling can be observed with the eye. Site-01 consists of a total of six areas that introduce the "Basic Principles of LED Lighting" and the lighting environment plan for different purposes such as office, store, residential and outdoor. Site-02 is a more professional area, envisioning an environment where LEDs are actually set up, and equipment for simulation experiments is available. Although these areas are reserved, even ordinary users can visit freely without an appointment.
In addition, CO-LAB will also serve as a window for Toshiba's new order-based production system "E-CORE Custom". Initially, it mainly provides lighting for the ceiling system, providing a total of more than 2,200 sets of color temperature 2700K ~ 6500K, Ra70 ~ 90, users can choose the best specifications according to the installation location. Even if you have previously required special orders and specifications that are not included in the catalog, you can deliver them within 2 or 3 weeks of the standard delivery date. In CO-LAB, consumers can choose the LED specifications on the spot while experiencing the lighting environment that changes with color temperature and Ra value. It is also possible to reconfirm the pilot lighting products.
Toshiba’s LED lighting sales in 2011 are expected to expand to 2.5 times the previous year, reaching 50 billion yen. Toshiba said it will strengthen its overseas market and strive to achieve the 150 billion yen sales target by 2015.
Transient voltage suppression diode, also known as a TVS diode, is a protective electronic component that protects electrical equipment from voltage spikes introduced by wires.
TVS diodes are placed in parallel with the circuit to be protected. When its voltage exceeds the burst breakdown level, excessive current is directly shunted. TVS diodes are clamps that suppress excessive voltages that exceed their breakdown voltage. When the overvoltage disappears, the TVS diode automatically resets and absorbs much more energy than a similarly rated crowbar circuit.
TVS,TVS DIODE,Transient voltage suppression diode
Changzhou Changyuan Electronic Co., Ltd. , https://www.cydiode.com