Archive
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Analysis of damping RC circuit of a switching power supply "haberdashery"
Archive01 Problem Background In our widely used AC/DC switching power supply, instantaneous reverse pulse generated on secondary coil due to leakage inductance of primary coil is very serious. As shown in Figure 1, this is an AC/DC circu...
2023-04-12【Archive】
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Four leg inductor? Did you see it?
ArchiveOur conventional inductors have two legs called differential inductors. Today I will introduce a common mode inductor with four legs. Differential mode current and common mode current Differential current: On a pair of differenti...
2023-04-11【Archive】
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An interesting summary of PID algorithm full of haberdashery
ArchivePID math model In industrial applications, PID and its derivative algorithms are among most widely used algorithms, and they deservedly are universal algorithms. If you can master process of designing and implementing a PID algori...
2023-04-11【Archive】
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Daniel's Summary: The details and experience of 30 PCB layouts are wonderful.
01. The filter capacitor should be as close as possible to IC power supply as well as oscillator, and resistor should be placed in front of oscillator. 02. Resize PCB in Design Board Shape. 03. P+L can be used to place component...
2023-04-10【Archive】
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Several Effective Circuit Analysis Techniques
ArchiveThere are many circuit analysis methods, such as superposition theorem, branch analysis method, mesh analysis method, knot analysis method, Thévenin and Norton theorem, etc. The flexible use of these methods according to specific ...
2023-04-10【Archive】
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Common USB Interface Circuit Design Problems and Solutions
ArchiveUSB is a fast, two-way, synchronous, low-cost, easy-to-use, hot-swappable serial interface. Because of advantages of fast data transfer, user-friendly interface, and hot plug support, USB devices are widely used. At present, most...
2023-04-10【Archive】
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Detailed analysis of the "various protection schemes" of a switching power supply
ArchiveInput undervoltage protection circuit 1 01 Overview This circuit refers to undervoltage input circuit. When input voltage is lower than protection voltage, control chip's Vcc power supply is turned off to turn off output. 02 Circ...
2023-04-09【Archive】
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Four ways to reduce the output "ripple and noise" of a switching power supply
Ripple is mainly represented by five aspects: input low-frequency ripple, high-frequency ripple, common-mode ripple noise caused by parasitic parameters, microwave resonant noise caused by switching power devices, and ripple cause...
2023-04-09【Archive】
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Countdown of 8 most commonly used diodes
ArchiveSummary: A diode is a very commonly used basic component. This article mainly talks about its application in circuitry. Freewheeling, Wave Detection, Voltage Doubling, Latching, Envelope Detection. 1. Antireaction In main circuit...
2023-04-09【Archive】
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How to distinguish induction from leakage, we will teach you three tricks! Ordinary people can also learn super practical
ArchiveWhen household appliances (such as washing machines, refrigerators, power tools) have a leak or induction electrification, they will feel "hand numbness". If it is only induced electricity, these appliances can continue to be use...
2023-04-08【Archive】
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