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PWM Deadband: Definition, Role and Principle

I. What is deadband? The deadband that occurs in a circuit is the phenomenon in which the output voltage remains unchanged when the input voltage is within a certain range. For example, in a pulse width modulation (PWM) circuit, when the amplitude of the input signal exceeds a certain threshold, the switching tube opens and the amplitude of the output signal increases. However, when the input signal amplitude drops to a certain range, the amplitude of the output signal remains unchanged, resulting in a dead....
2024-12-25 11:36:38 1705
PWM Deadband: Definition, Role and Principle

Several ways to control EMI radiation using PCB layered stacking

There are many ways to solve the EMI problem, modern EMI suppression methods include: the use of EMI suppression coating, selection of appropriate EMI suppression spare parts and EMI simulation design. In this paper, from the most basic PCB board, discuss the role of PCB layered stacking in the control of EMI radiation and design techniques. Power supply busbar Proper placement of capacitors of appropriate capacity near the power supply pins of an IC can make the jump in the output voltage of the IC come ....
2024-12-20 11:14:42 937
Several ways to control EMI radiation using PCB layered stacking

What are the main reasons for the heating of MOS tubes with very low internal resistance?

The main reasons for the heating of MOS tubes with small internal resistance include the following: Power loss: when the MOS tube flows a large current, even if the internal resistance is very small, it will produce a large power loss, resulting in heating. In switching power supplies, if the MOS tube does not turn off and on fast enough, additional power losses are also generated12. Linear operating state: If the MOS tube operates in the linear region instead of the switching region, too long a conduction ....
2024-12-16 11:07:28 1189
What are the main reasons for the heating of MOS tubes with very low internal resistance?

What are Driverless LED Lights?

The great American businessman and inventor of the light bulb, Thomas Alva Edison, once said, “We shall make electricity so cheap that only the rich will light candles.” That statement has indeed come true today. From small houses to paved roads to big industries, we can notice AC lights illuminating our environment after the sun goes down. Earlier lighting systems used different types of bulbs such as incandescent, Compact Fluorescent Lamps (CFLs) etc. but today with the advancement in LED ligh....
2024-12-11 11:02:59 1186
What are Driverless LED Lights?

Embedded RTOS in the end “real time” where?

Embedded RTOS (Real Time Operating System) has made a big splash in recent years. Embedded MCU, has long been out of the main frequency of only 8MHz era, now embedded controller chip, the main frequency can be as high as 600MHz, and ordinary MCU can easily run at 64MHz. not only the main frequency of the qualitative leap, and Arm Cortex-M series of MCUs, the early stage of the kernel design has also been added to support the RTOS of the native kernel instructions. However, although RTOS is called a “r....
2024-12-06 14:36:16 1777
Embedded RTOS in the end “real time” where?

PCB circuit board storage conditions in-depth analysis

In the modern electronics manufacturing industry, printed circuit boards (PCB) as the basic components of electronic equipment, its quality and performance are directly related to the reliability and service life of the final product. Therefore, the PCB circuit board storage conditions are particularly important. Reasonable storage conditions can not only extend the service life of PCB, but also effectively ensure its reliability and stability in the production and use process. In this paper, we will discus....
2024-12-03 10:25:07 1697
PCB circuit board storage conditions in-depth analysis

Should I lay copper under the inductor? PCB Design Guidelines for Low EMI DC/DC Converters

Every switching power supply is a broadband noise source. Therefore, integrating a DC/DC converter in an automotive circuit board network into an automotive control unit while still meeting the EMC requirements of the automotive original equipment manufacturer (OEM) can be a daunting task. Typically, noise from DC/DC converters and other high-speed circuits radiates through the connected cables, which provide an effective antenna path for the noise. To block this potential radiation path, filter circuits ar....
2024-11-28 11:45:10 2127
Should I lay copper under the inductor? PCB Design Guidelines for Low EMI DC/DC Converters

Constant current source application and multiple circuit design details

A constant current source is a power supply that can provide a constant current to a load, so constant current sources have a wide range of applications and are essential in many cases. For example, when charging a battery with the usual charger, the charging current will be reduced accordingly as the battery terminal voltage gradually increases. In order to ensure constant-current charging, the output voltage of the charger must be increased at any time, but the use of constant-current source charging can ....
2024-11-25 15:53:50 1663
Constant current source application and multiple circuit design details

DC/DC Buck Circuit “Ground Bounce” Principle and Solution

In electronic design, DC/DC step-down circuits are a common type of circuit used to convert higher DC voltages to lower DC voltages. However, this type of circuit often encounters a tricky problem during operation - Ground Bounce. Ground bounce, also known as ground bounce, is a transient voltage fluctuation at the ground node caused by a rapid change in current. This phenomenon not only affects the performance of the circuit, but also may produce electromagnetic interference (EMI), thus affecting the stabi....
2024-11-20 11:27:28 1856
DC/DC Buck Circuit “Ground Bounce” Principle and Solution

Capacitor performance directly affects the stability and reliability of the system

In the design of modern electronic equipment, capacitors, as indispensable components in the circuit, play a variety of roles such as energy storage, filtering, coupling and decoupling. From basic consumer electronics to complex industrial control systems, capacitor performance directly affects the stability and reliability of the system. I. The design and selection of capacitorsCapacitor design selection is the first step in the design of electronic systems, which directly affects the performance and rel....
2024-11-15 10:22:59 937
Capacitor performance directly affects the stability and reliability of the system

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