BQ25618/9 is a three-in-one (protection, charging and boost) IIC control switch charging chip specially developed by TI for TWS earphone charging case.
BQ25618 and BQ25619 have the same specifications...
I often use chips from foreign semiconductor manufacturers at work, but with the rapid rise of domestic chips, I am looking forward to having the opportunity to experience domestic chips up close. Thi...
How is impedance matching determined in a circuit? When I looked at some circuits, they said that the impedance matching resistor is 50Ω, and some are 75Ω. I looked up information online, but I still ...
1. Schematic diagram We know that a speaker or buzzer will make a sound when a fluctuating current is added to its two ends. To generate sound, the hardware circuit of a single-chip microcomputer is r...
1. Software This is probably the biggest difference. The operating system was introduced. Why was the operating system introduced? What are the benefits? 1) Convenience. This is mainly reflec...[Details]
For sites without AC power, it is difficult for diesel generators to guarantee power supply (due to rising oil prices and failure to refuel in time), and a new power supply solution is needed. A s...[Details]
The final outcome of automobile intelligence has not yet been decided, and the debate between perception fusion and pure visual routes has also been unresolved. Since entering 2024, NIO’s second br...[Details]
DSP has high-speed computing power and rich peripheral interfaces, and is widely used in embedded systems. Many DSP-based embedded systems are deployed in harsh environments or remote areas. When sof...[Details]
Transformer Multi-function Tester
How to test the transformer PT load:
1. PT load test parameter setting
In the PT test main interface, select to enter the "Load" test interface (as shown...[Details]
Can be used in battery charging applications and easily implements scalable designs
Battery-powered appliances are one of the fastest growing market segments in the industry, and su...[Details]
Rutronik and Shenzhen Yunliwuli Technology Co., Ltd., a Chinese Bluetooth technology specialist, sign a global distribution agreement Rutronik has signed a global distribution agreement with Shenzhen...[Details]
The Riversdie design (MAXREFDES8#) uses an H-bridge transformer driver (MAX256) and an LDO (MAX1659) to convert a 3.3V input to a 12V (15V) isolated output power supply (Figure 1). This versatile...[Details]
//The question requires designing an automatic water filling system, using two water pipes to fill the water tank, and being able to display time and quality
//The following is the program for the au...[Details]
Fractal theory establishes the connection between regular, smooth shapes and rough, broken shapes, using fractal dimension as a quantitative description method. According to fractal theory, the (ove...[Details]
1. Overview
Full-color LED display is a new type of electronic communication media, which has irreplaceable advantages in large size, high brightness and environmental adaptability. It can be ...[Details]
This example uses two methods to output PWM waveforms, namely software delay method and timer 0. The motor driver chip is L298. Its Chinese information can be found in the IC learning notes.
cod...[Details]
introduction As the power supply equipment for all electronic products, the power supply must not only meet the requirements of the power supply products, but also have its own protection meas...[Details]
A simple and flexible function generator can be constructed using an EPROM, a standard D/A converter and a counter. The principle is based on direct digital synthesis (DDS), which stores digital samp...[Details]
On the evening of October 22, at the HarmonyOS Night and Huawei's All-Scenario New Product Launch Conference, my country's first domestically produced mobile operating system, Huawei's HarmonyOS NE...[Details]
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