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How to choose small, medium and high power switching power supply module

2018-10-29

General Parameters The parameters we need to consider include voltage, current, and other auxiliary functions. Voltage and current are the two most basic parameters. For example, the power supply is to supply power to the motherboard CPU, which requires 5 volts. The current needs to be calculated according to the system power consumption, such as 5A. Do we choose a 5V/5A power supply in actual purchase? In fact, we will have a certain derating design in the design, generally we choose slightly higher than the actual use of power 20%, so that the power supply work effect is better, reliable and stable, the system is slightly overloaded also does not matter.

Notice of Guangzhou Sanmin Spring Festival Holiday in 2019

2019-01-23

Another year is coming, and we have ushered in 2019 full of hope, opportunities and challenges! Here, thank you for your support and trust in Sanmin Electronics in the past year. At the same time, I also hope that in the new year, Sanmin Electronics can continue to get everyone's attention and support, and Sanmin Electronics will continue to provide you with better products and services! When China's traditional festival "Spring Festival" is coming, I would like to pay my respects to all new and old customers and friends in the early years! I wish everyone a happy New Year! Financial resources! Business is booming! In order to let the company's employees have a happy and peaceful Spring Festival, the company's 2019 Spring Festival holiday time is hereby notified as follows: Holiday time: January 26-February 11 Commencement time: February 12 (the eighth day of the first month)

Terminology of Switching Power Supply-Ripple Introduction

2018-11-30

The output of the ripple switching power supply is not really constant, and there is periodic jitter in the output. These jitter looks like water ripple, which is called ripple. The ripple may be a voltage or current ripple. Two parameters are usually used to describe the ripple: maximum ripple voltage: the peak-to-peak value of the ripple. Ripple coefficient: the ratio of the effective value of the AC component to the DC component. The reason for the ripple The ripple of the switching power supply comes from 2 places: Low frequency ripple: from the cycle of the AC input, the suppression ratio of the power supply to the input is not perfect, when the input changes, the output will also change.

Technical Requirements for Glue Filling of Switching Power Supply Module

2019-04-20

The potting of the AC-DC power module is very important. This process not only involves the protection of the AC-DC power module (waterproof, moisture-proof, dust-proof, anti-corrosion, etc.) but also involves the thermal design of the AC-DC power module. Power potting is a two-component, thermally conductive, additive potting silicone rubber. The rubber material is stored for a long time after mixing at room temperature, but it can be cured quickly under heating conditions, which is especially beneficial to the use of automatic production lines. No corrosion to metal, temperature resistance, high temperature aging resistance. After curing in a wide temperature range (-60~280 ℃) to maintain rubber elasticity, excellent insulation performance. No closing during curing

Introduction of switching power supply module ripple

2019-09-11

The output of the switching power supply module is not really constant, and there is periodic jitter in the output, which looks like water ripple, called ripple. The ripple may be a voltage or current ripple. Two parameters are usually used to describe the ripple: maximum ripple voltage: the peak-to-peak value of the ripple. Ripple coefficient: the ratio of the effective value of the AC component to the DC component. The reason for the ripple The ripple of the switching power supply module comes from two places: low frequency ripple: from the cycle of the AC input, the power supply's suppression ratio to the input is not perfect, when the input changes, the output will also change.

Notice of Guangzhou Sanmin National Day Holiday in 2019

2019-09-23

The National Day is approaching. According to the notice of the 2019 Holiday Arrangements announced by the General Office of the State Council and in combination with the actual situation of our company, we hereby notify the 2019 National Day Holiday as follows: 1. Holiday Notice National Day holiday time: 7 days from October 1 to October 7, 2019; Normal work on October 8, 2019. 2. logistics distribution notice According to our National Day holiday schedule, our logistics transportation and distribution details are as follows: Shipment will be stopped from October 1 to October 7. The deadline for orders is 16:30 p. m. on September 30, and normal delivery will resume on October 8 (Tuesday). In order to avoid the unstable time limit of orders caused by excessive logistics pressure during the holidays, please stock up in advance! During the holiday, if you have any questions, please contact the corresponding business manager and customer service personnel. If there is any inconvenience to you, please understand!