Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It mainly consists of a primary coil, a secondary coil and an iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. Transformers exported to the EU require CE certificat...

DC Power Connectors Information DC power connectors are electrical connectors that provide direct current (DC) power to a connected device. DC power connectors are most often used for electronic power supply applications. They are often used with cable assemblies to provide power to electronic equipment and devices. Applications The primary function of a DC power connector is to make or provide an...

The efficiency of the Light Emitting Diode (LED) driver is the ratio of energy emitted by the driver to the power it consumes from the electric line. The higher the conversion efficiency, the higher the utilization rate of electric energy, which means that the power consumption is not so much; the higher the conversion efficiency, the lower the loss, and the less heat generated by the constant vol...

MTBF (Mean Time Between Failures) is a reliability metric that measures the average time between failures of a system or component. It is commonly used in the field of reliability engineering to assess the reliability of products or systems. MTBF provides an estimate of how long a device or system is expected to operate before experiencing a failure. It is usually expressed in hours.   Power ...

Constant current LED drivers and constant voltage LED drivers are two different types of drivers used to power LED lighting systems. 1. Constant Current LED Drivers: These drivers provide a fixed current output, typically in the range of 350mA to 700mA, irrespective of changes in voltage or load conditions. This ensures that LEDs receive the precise amount of current they require for optimal perfo...

As an everyday person most of these LED power supply symbols will probably seem strange and obscure and probably bear no relevance, just confirm the item works that’s all you need. Even to the electrical/lighting professionals a lot of these symbols can be quite unfamiliar. But be assured that every symbol has an important and relevant meaning, here at ZhenHuan we want to help you better understan...

Clause 4.1.1 remained in the 3rd edition, but was removed from the 4th edition, which was published in 2023.   What's the 4.1.1? IEC 62368-1 replaces two other standards – IEC 60950-1 and IEC 60065. There is a potential problem for companies making the transition from one of the old standards to the new one, however. Many companies do not want to be compelled to retest and recertify (or possi...