CST118S is widely used in a wireless charging mobile toothbrush scheme

Now many families are using electric toothbrushes, and electric toothbrushes are increasingly accepted by consumers. Next, let‘s introduce electric toothbrushe...

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Comparison Test Report of CST6118 and CST118S

Comparison Test Report of CST6118 and CST118S

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Design of EMI plus filter for class D power amplifier

Design of EMI plus filter for class D power amplifier Class D power amplifier output The output of class D power amplifier is PWM. Because the horn itself is a ...

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Control principle of brushless DC motor and working principle of brushless DC mo...

From simple drilling rigs to complex industrial robots, many machines and equipment use brushless DC motors to convert electrical energy into rotational motion....

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Resolution direction of power amplifier bottom noise

 Generation of bottom noise Generally, the bottom noise of mass produced chips is the normal value, hundreds of micro-amplitude, but in actual use, there ...

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Power amplifier POPO sound solution

POP sound  Generally, after the chip is turned on, an impact is input from the sound source, resulting in an impact on the output, which sounds like POP ...

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High sensitivity touch key MCU application circuit

High sensitivity touch key MCU application circuit

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Touch MCU layout precautions

Touch MCU layout precautions: 1: VDD of touch MCU is indirectly connected in parallel with VSS 104 and as close to touch MCU as possible 2: The closer all touch...

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Detailed explanation of MOS transistor working principle diagram - MOS transisto...

MOSFET is a type of FET (another type is JFET) that can be manufactured as either enhanced or depleted, with a total of four types: P-channel or N-channel. Howe...

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Characteristics and working principle of photoresistor

The characteristics and working principle of photoresistor can be summarized as follows:

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There are several types of switching power supply ripple, switching power supply...

Definition: Low frequency ripple is related to the filter capacitance capacity of the output circuit. Due to the limitation of the volume of the switching power...

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The structure and working principle of IGBT are introduced

IGBT (Insulated Gate Bipolar Transistor) device is a compound fully controlled voltage-driven switching power semiconductor device. It combines the characterist...

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This is a proposal on DC-DC PCB layout of Dachang

In the application design of DC-DC chip, whether the PCB layout is reasonable has a crucial impact on whether the chip can show its optimal performance. Unreas...

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How to divide the efficiency of three-phase motor? How to improve the efficiency...

The efficiency division of three-phase motors is mainly based on their energy efficiency grades, which are usually directly related to the energy consumption an...

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Summary of MOS tube driver circuit

When using MOS tube to design switching power supply or motor drive circuit, most people will consider the on-resistance of MOS, maximum voltage, maximum curren...

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Nine common types of power amplifier ics and their respective characteristics

Do you know what are the common types of power amplifier ics? 1, Class A power amplifier, also known as class A power amplifier 2, Class B power amplifier, also...

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PCB layout 12 small details

1.The spacing between the patches 2.the distance between the in-line device and the patch 3.the placement of decoupling capacitors for IC 4.Pay attention to th...

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Brushless direct current motor (BLDC) structure, application field and working p...

Brushless direct current motor (BLDC) composition, application field and working principle, brushless direct current motor (BLDC) is a kind of motor, its struct...

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Power amplifier IC important parameters

In the audio amplifier parameters PSRR, THD+N, SNR, AO, Po,Isc and other parameters determine the advantages and disadvantages of an audio amplifier

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High fashion wearable devices

Early wearable devices are ordinary and ordinary, paying attention to functional requirements, but ignoring the appearance of beauty. People wear them to count ...

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