LED Tester | Christmas Light Tester - LISUN

Introduction of Conducted Immunity Testing This paper is a brief introduction and description for conducted immunity testing which based on IEC 61000-4-4 fast transient burst test , IEC 61000-4-5 lightning surge test , IEC 61000-4-11 voltage cycle drop test and IEC 61000-4-12 ring wave test .   IEC 61000-4-4  establishes a common and reproducible reference for evaluating the immunity of electrical and electronic equipment when subjected to electrical fast transient/bursts on supply, signal, control and earth ports. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.   IEC 61000-4-5  relates to the immunity requirements, test methods, and range of recommended test levels for equipment to unidirectional surges caused by over-voltages from switching and lightning transients. Several test levels are defined which relate to different environment and installation...

LISUN Engineer do installation and training in Algeria   This customer inquiry three months ago, and visit our company about two months ago to learn about our product deeply. They are a pretty LED lighting manufacture, and we believe that there would be many orders between us in the future.   After the visiting, they finally decided to purchase the devices we recommended them before: GDJS-013A High and Low Temperature Humidity Chamber , LVD-100KG Electrodynamic Vibration Generator System and SG61000-5SB Surge Generator . Our customer express that they are very satisfied with our service, and would cooperate with us again in the near future.   Many thanks to our customers for your support, we would try our best to provide the best products, the best price and the best service to you!   Below are a few photos of installation & training: [caption id="attachment_9410" align="alignnone" width="600"] Figure 1: A photo of the customer and our engineer (righ...

Five kinds of LED Efficiency Compare LED efficiency and life, the conception of efficiency is more complex. Firstly, there are three kinds of general efficiency, please check the Diagram 1.   Luminous Efficiency(lm/W) Conversion Efficiency lamp beads Connect lamp beads to DC power source directly, the rate of lamp beads flux and consumption power Connect lamp beads to DC power source directly, the rate of light power and total consumption power. Luminous Efficiency= lamp beads flux/ consumption power Conversion Efficiency= lamp beads light power/ total consumption power Single LED in the application Environment Connect lamp board to DC power source directly, the rate of lamp board flux and consumption power Connect lamp board to DC power source directly, the rate of light power and total consumption power. Reflect the average luminous efficiency of lamp beads Generally, do not consider this parameter LED Power Driver × Connect with AC power, the rate of output power and input ...

LISUN Engineer Visit Turkey to do Installation & Training   LISUN’s after-sale service is absolutely the first class! The quality of our service won’t change due to the size of the order. Such as this customer, they purchased one set of LPCE-2 Spectroradiometer & Integrating Sphere LED Test System , LISUN arranged an engineer dedicated to provide the customer installation & training to their company. Our customer is very satisfied with the service, and said that they would like to continue cooperations with LISUN in the future.   Below is a photo of LISUN engineer (the left), our client (the right) and the LPCE-2 LED test system: [caption id="attachment_9350" align="alignnone" width="800"] LISUN engineer (the left), our client (the right) and the LPCE-2 LED test system[/caption]

LISUN engineer Joye do installation and training in Korea   This time, our young engineer Joye Yang set off to do installation and training for our customer in Korea. This customer has purchased some instruments from LISUN before and they are very satisfied with our products and service.   They purchased LSG-1700B Rotation Luminaire Goniophotometer (Big Size) , SG61000-5 Surge Generator and EMI-9KA EMI EMI Receiver System from us this time. Below is the group photo of our customer and Joye: [caption id="attachment_9304" align="alignnone" width="800"] LISUN engineer Joye do installation and training in Korea[/caption]  

Automotive LED Light   In China, cars are becoming more and more popular. With the development of automobile industry, automotive lights are also developing. Automobile lights have experienced Incandescent Light, Halogen Light and HID(High-Intensity Discharge) Light, to the current era of Automotive LED Light.   Automotive LED Light has many advantages: Energy-saving and Environmental Protection: LED directly converts power energy to light energy, power consumption is equivalent to one tenth of traditional lamp; it saves fuel consumption. LED spectrum is without ultraviolet and infrared, it has small glare. It does not contain mercury pollution. Waste can be recycled. Life is long. LED life is very long. Volume is small. Designer can change the lamp mode freely. Automobile style can be diversified. Performance is stable, seismic performance is strong. Reaction is fast and it does not require heat start time. It can prevent rear-end, which can ensure traffic safety....

LISUN participate in the largest Lighting Fair in Russia - Interlight Moscow   Interlight Moscow is held from November 7 to 10, 2017,  Interlight Moscow is not only the biggest show in Russia and Eastern Europe covering the whole range of products related to lighting, electrical engineering, home and building automation, but also the largest professional lighting exhibition among the Russian region and the CIS countries. LISUN got rich harvest through participating this exhibition.   In addition to the local lighting manufacturers in Russia, this exhibition also attracted professionals in lighting from the surrounding country. We promoted our brand, got many customers, won new orders, and also met professionals such as university professors, laying another cornerstone for our future development.   Finally, we share a few photos below: [caption id="attachment_9276" align="alignnone" width="800"] Figure 1: Panorama of our booth[/caption] [caption id="a...

Reasons of error for LED Lamp Testing From the perspective of the LED product structure and technology development, the quality criteria of LED product mainly consider the parameters of the optical properties, electrical properties, thermal properties, radiation safety and life. LED optical properties mainly involve luminous flux, radiation flux, luminous efficiency, chromaticity coordinates, correlated color temperature, color rendering index etc. At present, photoelectric test, light distribution test, optical energy test, attenuation test and pressure test and so on are the conventional test project of LED lamps. In the process of the detection, it often occurs to the enterprise that the same lamp has two inconsistent results at two testing. The reasons of this error are mainly in the following three aspects: The first is the error from system; this is within the allowable range. Each detection system may be inconsistent, there is a certain error. Traditional lamps with error within...