Based on the junction temperature measurement method of high power LED, the ratio of current amplitude to workflow during injection of square wave current pulse into the measured LED device is studied. It is found that the ratio of actual rated current to impulse current is the same. The junction temperature of the LED can be measured by directly measuring the forward junction voltage of the LED u...
What is Ingress Protection testing? An enclosed product’s resistance to liquid and particle infiltration is assessed during ingress protection testing. Depending on the achieved resistance to solid particles and liquids, the product is given an IP rating based on IEC 60529 after testing. The degree of protection an enclosure offers against invasions is tested through ingress protection testi...
How is ESD static electricity generated? Due to external effects such as friction or in the form of various energies such as kinetic energy, potential energy, thermal energy, chemical energy, etc., the positive and negative electricity of atoms will be unbalanced. Friction in daily life is essentially a process of continuous contact and separation. In some cases, static electricity can be generate...
ESD simulator An ESD simulator, often known as an ESD gun, is a portable device that is used to evaluate the resistance of devices to electrostatic discharge (ESD). These simulators are used in laboratories that specialize on electromagnetic compatibility (EMC). ESD pulses are high-voltage pulses produced when two items with opposing electrical charges come into contact. They can be recreated in a...
Worldwide, enclosures and control cabinets are utilized in a variety of settings and must adhere to the tightest safety standards. A crucial role is played in this by protection category tests that concentrate on how much water and other environmental factors can enter enclosures. One such test that is frequently performed in devices is IK testing. LISUN makes and supplies IK level testers. You ca...
The high and low temperature test chamber is a common test equipment for simulating the heat dissipation performance, stability performance, power consumption parameters and estimating the service life of the product in the high and low temperature environment. Temperature Humidity Chamber The selection of environmental and reliability test equipment should follow the following five basic princi...
Salt spray test is a clear and specific regulation of salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value. In addition, it also puts forward technical requirements for the performance of salt spray test chamber. The purpose of salt spray test is to assess the salt spray corrosion resistance quality of products or metal materials, and the j...
What is an Environmental Chamber? An Environmental Chamber, also known as a climate chamber or a climatic chamber, is an efficient method to test how sensor assemblies perform under extreme temperature conditions, both cold and warm. Every suitable environmental chamber consists of a programmable controller which is used to set the intended desired temperatures. Primarily, an individual can also m...
Goniophotometers The method of measuring angular distribution of light is termed as gonio photometry. A photometric device combining photometer and a goniometric motion stage to measure the light emitted by an object at different angles is known as goniophotometer. LISUN is re known name for manufacturing different models of goniophotometer in accordance with CIE, IEC and other national or interna...
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