The platform can be synchronized for the first time when it is powered on, but it will be disconnected after a period of time, and it will not be synchronized afterwards. My colleague said it is a pro...
Core device: TPA2010 Many PWM (pulse width modulation) applications, such as Class D audio amplifiers, require symmetrical drive circuits. The CMOS pair in Figure 1 consists of complementary N-channel...
I recently worked on a mobile phone project, and the charger chip used was SMB Qualcomm. When the battery was fully charged, the charger was plugged in, and the test would suddenly fail all night! I h...
The installed OS is WINCE6.0+SP2, and the updated package is installed. When compiling OS with built-in BSP under WINCE6.0, there is always a compilation error, and the build.log file outputs: EDITBIN...
Repair diagram reading refers to the analysis of circuit diagrams during the repair process. This reading is very different from the reading of diagrams when learning the working principle of circuits...
Today's portable medical devices allow patients to diagnose and treat themselves, move around freely, and even use the devices when they are out and about. To achieve the "easy to carry" feature, po...[Details]
Pulse oximeters, non-invasive instruments used to monitor a patient's blood oxygen saturation, are benefiting from moving away from expensive discrete component solutions toward more integrated design...[Details]
JTAG Technology Introduction
One disadvantage of shrinking technology is that the complexity of testing small devices increases dramatically. When the board area is large, the board is tested...[Details]
In view of the problems in the actual FPGA development process, such as difficulty in locating faults, long compilation time after repeated code modification, and inability to confirm fault solutio...[Details]
In a Class D audio power amplifier, the preamplifier is a relatively important module. It is located at the front of the entire topology and completes the processing of the input signal source,...[Details]
Some application designs have higher requirements on the speed at which the system's switching power supply can provide voltage output. Figure
1
shows
the
bootstrap
...[Details]
Lifting wavelet transform not only has the advantages of traditional wavelet multi-resolution, but also simplifies the operation and is easy to implement in hardware. Therefore, it is widely used in d...[Details]
1. Basic circuit characteristics of power amplifier
The basic circuit of the complementary symmetrical OTL power amplifier is shown in Figure ①. Among them: C1 is the signal input coupling ele...[Details]
Capacitive sensing user interfaces are emerging as a practical and innovative alternative to mechanical buttons in mobile phones. While capacitive sensors can be viewed as a drop-in replacement fo...[Details]
Abstract
: This paper introduces the general structure of the driver under the currently popular open source embedded operating system μClinux, as well as the connection between the touch scr...[Details]
Nowadays, the phenomenon of using cloned taxis and trucks for operation is becoming more and more serious. The so-called cloned car is one or several unlicensed vehicles that are used to copy anoth...[Details]
I hope my mobile phone has more functions, I hope my digital camera is smaller, I hope my Walkman can listen longer... Consumers are always full of expectations for the performance of portable electro...[Details]
With the improvement of people's requirements for vehicle riding comfort and the development of passenger car suspension technology in my country, air suspension is increasingly used in passenger ...[Details]
After more than ten years of technological development and application market cultivation, biometric technology has been applied on a large scale in many application fields. As far as the Chinese m...[Details]
As mobile phones and other portable devices have more functions, there are more potential input and output (I/O) channels for electrostatic discharge (ESD) voltage to enter, including keyboards, bu...[Details]
Embedded System
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