Classification and Principles of Power Amplifiers

Class A working state: The collector current of the transistor is always flowing throughout the entire working cycle, and the efficiency of the amplifier is...

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PCB Design Method for Reducing Harmonic Distortion

In fact, printed circuit boards (PCBs) are composed of electrically linear materials, which means their impedance should be constant. So, why does PCB introduce...

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Countermeasures for Excessive Radiation Emission of Small Power Portable Audio P...

Low power portable electronic products currently use lithium batteries and Boost (Buck) chips to power devices such as MCU, Audio, and display screens. This typ...

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Equivalent High Temperature Solution for Differential Input to Differential Outp...

Today‘s electronic systems must be able to operate under unprecedented high temperature conditions. Turbine engines, oilfield equipment, and various other cont...

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What are the precautions for the circuit of the audio amplifier

Power amplifiers are a crucial part of audio electronics. It is commonly used to amplify the power of input signals many times. In audio electronics, operationa...

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Analysis of Key Points in Sensor Design

A sensor is a detection device that can sense the measured information and transform it into electrical signals or other required forms of information output ac...

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Overview of FOC motor drive

A large number of motor control applications have been continuously seeking ways to improve efficiency while reducing system costs. As a result, Field Oriented ...

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Understand the driving method of stepper motors

A stepper motor is an actuator that converts electrical pulses into angular displacement. When the stepper driver receives a pulse signal, it drives the stepper...

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The significance of fast battery charging

In fact, under current fast charging technology, the charging time of 0-100% is approximately 1 hour and 10 minutes, which is due to the process of trickle char...

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How to choose a lithium battery charging management IC

Lithium batteries are an energy storage device that involves the migration of lithium ions back and forth between the positive and negative electrodes to comple...

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Using a buck boost converter as a voltage regulator

Most applications or sub circuits require constant voltage power supply within a certain voltage tolerance range to ensure normal operation. Battery driven appl...

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Calculation of amplifier noise figure

This article briefly introduces the noise figure calculation of two amplifier architectures, including the noise figure calculation of inverting and non inv...

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Discussion on New Omnidirectional Ceiling Antenna Technology and Standards

As early as the early stages of 3G experimental network construction, researchers discovered that 3G signals have fast attenuation, high penetration loss, and p...

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Design points and electrical requirements of switch power supply PCB

In any switching power supply design, the physical design of the PCB board is the last step. If the design method is not appropriate, the PCB may radiate to...

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Discussion on the Influence of Ground Wire on EMI Interference

As the functions of electronic products become increasingly complex, more and more modules and components are required. However, due to these reasons, our g...

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Capacitive touch sensing technology in household appliances

The buttons based on capacitive sensing technology make the appearance of electrical appliances fashionable and beautiful, eliminating wear issues, and are more...

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The influence and selection of resistive and capacitive components on audio ampl...

Resistive capacitance components are the most widely used passive devices in audio equipment. In recent years, domestic audio manufacturers have attached gr...

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The simplest and most practical high and low pitch lifting circuit

As friends in the audio industry know, excellent sound perception requires repeated adjustments to the speaker and cavity. Without the bass, it‘s like with...

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The Golden Rule of PCB Design

Despite the increasing integration of semiconductors and the availability of on-chip systems for many applications, as well as the increasing ease of access...

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Summary of Mosfet transistor driver circuit

When designing switching power supplies or motor drive circuits using MOS transistors, most people consider the conduction resistance, maximum voltage, maxi...

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