BLDC three-phase sine wave brushless motor drive solution

With the increasing demand for brushless motors and different requirements for new products, many friends have different views on inductive and non-inductiv...

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Simplify Home Theater System Design Using HDMI Transceivers

Today, large screen HDTV (High Definition Television) has been widely recognized by consumers, and people are purchasing various electronic devices to impro...

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Setting the output impedance using feedback can save 3dB of output power

Operational amplifiers are often terminated in series to match the impedance of the load. However, this practical method will generate a 3dB output power lo...

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Distinguishing Methods for High Power LED Chips

Given the chaotic market competition situation in the LED lighting market, many businesses have taken a vicious price reduction war, which makes it difficul...

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Calculation of coil inductance

Impedance (ohm)=23.14159F (operating frequency) Inductance (mH), set to use 360ohm impedance, so: Inductance (mH)=Impedance (ohm) ÷ (23.14159) ÷ F (operating fr...

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How to control the motor with the aid of low side current induction

Recently, I have been conducting ESD testing for electronic products. From the test results of different products, it is found that this ESD is a very impor...

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Simple reverse polarity protection circuit without voltage drop

The usual method of reverse voltage protection is to use diodes to prevent damage to the circuit. One solution is to use a series diode that allows only cur...

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Discussion on capacitance calculation of buck converter IC

The rated voltage of the input capacitor must be higher than the input voltage. In addition, the rated ripple current of the capacitor must be higher than the i...

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Tackle the difficulties of voltage surge and current surge

In order to prevent the distributed inductance and capacitance of high-speed switching circuits in switching power supplies (switching power supplies are po...

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Manage electronic system surges and enhance system protection

The methods for avoiding circuit system failures in electronic products and managing power-on surge currents have made significant progress, evolving from s...

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High precision and high edge current detection amplifier monitoring PWM load cur...

"At the moment of turning on the audio power supply, because the voltage at both ends of capacitor C3 cannot suddenly change, it can be considered as a shor...

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Design of omnidirectional three-dimensional capacitive sensor

Through analyzing and researching the problems encountered in students‘ electronic training courses, I invented an omnidirectional three-dimensional capaci...

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Design of a Novel Class D Audio Power Amplifier Driver Circuit

Due to the high efficiency and relatively small size of the integrated Class D audio power amplifier, and in most cases, no or only a small area of heat sin...

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New brushless DC motor control sensor improves energy efficiency and reduces noi...

Brushless DC (BLDC) motors have increasingly become the main force in the motor market. Although the procurement cost is a little high and electronic device...

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Add speaker protection circuit to car audio

1. At the moment of connecting the audio power supply, because the voltage at both ends of capacitor C3 cannot jump, it can be regarded as a short circuit, ...

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Notes on LLC design of audio amplifier

Special consideration must be taken when designing the power supply for the audio amplifier. Compared with the standard isolated power supply, the nonlinear...

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Design of fast response feedback system for small motor drive

The motor rotation information, such as position, speed and direction, must be accurate in order to produce the drivers and controllers in various emerging ...

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Principle and design guide of power amplifier circuit

Power amplifier (English name: power amplifier), referred to as "power amplifier", refers to an amplifier that can produce maximum power output to drive a l...

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Evolution of on-board wired charging technology

At present, there are two major development directions for on-board charging: wired charging and wireless charging. The following charging head network will...

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What should I do if the power ripple is large

1、 Generation of power ripple Our common power supplies include linear power supplies and switching power supplies. Their output DC voltage is obtained by ...

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