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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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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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Frequency compensation of operational amplifiers
The operational amplifier can be configured as open loop and closed loop. In an open loop, there is no feedback circuit. But in a closed-loop system, the amplif...
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The difference between RC filter and LC filter
The frequency range of LC filter application is 1kHz~1.5GHz. Due to the limitation of the Q value of the inductance, the cutoff region of the frequency response...
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What does Transient Suppression Diode TVS Transient Suppression Diode TVS mean
Transient Suppression Diode (TVS), also known as Clamping Diode, is a high-efficiency circuit protection device commonly used internationally. Its appearance is...
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All information about the reverse phase buck boost converter
All information about the reverse phase buck boost converter is based on the switch mode voltage conversion of inductors, which is a fundamental technique for ...
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Common mode and differential mode
When the changes in voltage and current are transmitted through wires, there are two forms, which we refer to as "common mode" and "differential mode". The powe...
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Class D audio amplifier: What, why, and how
Class D amplifiers were first proposed in 1958 and have become increasingly popular in recent years. What is a Class D amplifier? How do they compare to other t...
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There are many challenges in power supply design, dealing with high current can ...
In the opening remarks, it was mentioned that the most important factor in power supply design is the current, and the magnitude of the current determines the d...
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Wearable PCB design should be cautious, considering these three major issues
Due to their small size and size, there are almost no ready-made printed circuit board standards for the growing wearable Internet of Things market. Before thes...
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Design of LED Street Lamp Power Supply
LEDs are more efficient than traditional bulbs and lights. They do not require preheating time to achieve brightness, which makes them better than fluorescent l...
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Low voltage motor drive design
The low-voltage motor driver uses two basic MOSFET configurations: n-channel half bridge and p and n-channel (complementary) half bridge. The main advantage of ...
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Three section lithium battery mobile power supply bidirectional fast charging IC...
Built in PD3.1/QC3.0 protocol, 3-8 sections of voltage up and down bidirectional fast charging 140W lithium battery charging and discharging chip-M12269, used f...
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What is the difference between current limiting resistor and voltage divider res...
There is no difference in appearance, they are all resistors. Voltage sharing and current limiting are based on specific scenarios. When components have current...
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Solution to common problems with Bluetooth earphones
Solution to common problems with Bluetooth earphones
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