Flower watering indicator
Author: Zhang Zezhong
Flowers are loved by everyone. Many people like to grow flowers. The flowers they just bought are gorgeous and colorful, but after a few days, the flowe...
How to understand the alarm performance of 14 or more half-cycles of arc faults in 1s in GB14287.4 "Electrical Fire Monitoring System Part 4: Arc Fault Detector"? How to understand the alarm performan...
Abstract: In switching power supplies, EMI filters play a significant role in suppressing common-mode and differential-mode conducted noise. Based on the study of the filter principle, a method of ind...
[i=s]This post was last edited by SsvepX on 2018-7-23 08:54[/i] Use square wave to detect sine wave, square wave 0~5V, CD4053 power supply is +-5V, sine wave amplitude is 4V, no bias, frequency 23.5k,...
Several power supplies are used in the same room, including a Xinma Gold 500w, a Maexs Gold 500w, and several Great Wall Huntkey 350w power supplies. Symptoms: The original power supplies were very qu...