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MOSFET selection strategy for unused applications
Before the introduction of MOSFETs in the late 1970s, thyristors and bipolar junction transistors (BJTs) were the only power switches. BJT is a current cont...
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Russia formulates semiconductor development plan to achieve mass production of 2...
As we all know, capacitor (c) and inductor (L) form an LC network (Network) on the sound line, which is used to divide the frequency line - the output integ...
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Distortion of audio power amplifier and common improvement methods
Audio power amplifier distortion refers to the phenomenon of waveform distortion of replayed audio signal, which is usually divided into electrical distortio...
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Learn some high input voltage LDO
Linear voltage regulator (LDO) means low dropout. In recent years, some manufacturers have launched high input voltage LDO, with the highest input voltage e...
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Cause analysis and suppression method of peak current
The current IOH pulled from the power supply when the digital circuit outputs high level and the current IOL injected when the digital circuit outputs low l...
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How does PCB layered stacking control EMI?
There are many ways to solve EMI problems. Modern EMI suppression methods include: using EMI suppression coating, selecting appropriate EMI suppression part...
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Solution to the influence of class D power amplifier on EMI
Now more and more portable electronic products, home audio-visual systems and car audio systems use class D amplifiers. Class D power amplifiers have the ch...
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How do MCU with different level signals communicate with each other?
First, let‘s talk about the purpose of this circuit: when two MCU work under different working voltages (such as MCU 1 Working Voltage 5V; MCU 2 working vo...
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Magic active noise reduction technology
When you take transportation every day, do you notice the noise pollution of the surrounding environment? Facing the annoying noise running in our ears, in ...
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Circuit diagram of class a headphone amplifier driven by operational amplifier
Using the class a amplifier introduced in this paper, a better high fax effect can be obtained. Class a headphone amplifier (tl072op with bc142143) In d...
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Application of bipolar stepping motor in acceleration and deceleration process
Introduction For DC motors, the speed at which the motor drive shaft reaches a specified speed can be controlled by increasing the voltage (increasing the d...
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What is the technology to drive heavier loads at lower voltages?
Bootstrap technology is applicable to most boost converters and can keep driving heavy loads when the voltage of the converter decreases. Many portable desi...
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The best charging method of lead-acid battery
A technical method for optimal charging of lead-acid battery and its application 1、 Working principle: according to the research results of American batter...
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Application of DC-DC boost regulator in low power portable system
The power supply of portable electronic devices (such as smart phones, GPS navigation systems and tablets) can come from low-voltage solar panels, batteries or ...
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What driving factors of DC-DC converter will affect the trend of power supply de...
DC-DC converter is the core of modern electronic power supply. It provides conversion from one voltage level to multiple other voltage levels. The DC DC con...
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Selection of driving power supply for LED light bar dimming application
LED is more and more widely used in lighting and lighting, which is superior to traditional lighting. Apart from improving the quality of life, improving th...
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5V system and 3.3V system level conversion
When designing a system circuit with MCU or arm, we often meet that the VCC of MCU is 3.3V, but the peripheral circuit needs 5V. Sometimes it‘s the other w...
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Analysis of problems in TWS earphone design
1. The two CC1 and CC2 pins of type-C USB in the charging bin cannot be short circuited together, but should be connected to the pull-down resistance indepe...
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Semiconductor silicon wafer is in short supply, and the price will rise all the ...
There are many kinds of lithium batteries, including batteries composed of round cells like 18650 and lithium batteries composed of polymers. If they are di...
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Basic points and application method of analog voltage comparator: from level det...
When designers want to collect more data at the edge of Internet of things (IOT), industrial Internet of things (iiot), artificial intelligence (AI) and machine...
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