Diodes, MOSFETs, and IGBTs are the most commonly used electronics in LED switching power supplies. Thyristors have a small number of applications in switching power supply input rectifier circuits and soft-start circuits. Power transistor driving is difficult, switching frequency is low, and it is gradually replaced by IGBTs and MOSFETs. Three conditions for LED switching power supply: a. Switch: The power electronics do not work in a linear state, but work in a switching state. b. High frequency: The power electronic device does not work in the low frequency state, but works in the high frequency state. c. DC: The output of the switching power supply is not AC but DC. Stainless Steel Needle Valve Hydraulic Brass Stainless steel needle valve hydraulic brass is an important part of instrument measurement pipeline system. It mainly includes stop valve and ball valve. Its function is to open or cut off pipeline passage. Stainless Steel Needle Valve,Solenoid Needle Valve,Motorized Needle Valve,Pnumatic Needle Valve Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.taizhoujbcbyq.com
Ferrule type instrument valve has the advantages of convenient installation and disassembly, tight connection, conducive to fire prevention, explosion-proof, high pressure resistance and good sealing performance. It is an advanced connection valve in power station, oil refining, chemical plant and instrument measurement pipeline. This type of valve shall be installed horizontally in the pipeline.
Stainless steel needle valve has good sealing performance and long service life. Even if the sealing surface is damaged, it only needs to replace vulnerable parts to continue to use.
During installation, the flow direction of medium shall be consistent with the arrow on the valve body.
LED switching power supply will develop in the direction of high frequency in the future, because high frequency will promote miniaturization, and switch power supply will enter a wider range of applications, especially in high-tech applications, promoting the miniaturization of high-tech products. Lightweight. In addition, the development and application of switching power supplies are of great significance in terms of energy conservation, resource conservation and environmental protection.
August 27, 2024