1. Circuit diagram of using transistor/triode to drive fan with PWM waveformThere are two examples of such ICs, one with DC drive and the other with PWM drive, as shown in Figures 1 and 2. The IC in F...
2009 IC Industry Analysis Report. Analysis and Prospect of China's IC Industry under the Economic Crisis~~ 1. Analysis of the Operation Characteristics of the IC Industry in 2008 (I) Both the Supply a...
Please help me look at the code, the syntax is wrong, the for loop can't be implemented? Python syntax and writing format really waste debugging time. In addition, how can I call the len() function? ?...
[table=98%,rgb(238, 238, 238)] [tr][td]stm32 TIM3 works in PWM1 and counts up. In software simulation: change the value of CCR1 in the interrupt function, and then set the UG bit in software to genera...
The Mobile Industry Processor Interface (MIPI) Alliance is an organization responsible for promoting the standardization of software and hardware in mobile devices. It has released the D-PHY specif...[Details]
As LEDs continue to improve in almost every aspect of performance and cost, LED lighting is being used in an increasingly wide range of applications, among which LED street lights are a focus of in...[Details]
1 Introduction
Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detec...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
D5026A is a driver IC designed by Shanghai Debei Electronics for energy-saving LED display screens. Its design concept is energy-saving and compatible with existing solutions, that is, it can be ...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
1 Introduction
At present, advocating health has become the focus of people's attention, and the emergence of treadmills has become more and more popular. People can exercise at home or in the ...[Details]
In the test of the electronic ignition module, in order to simulate the real working conditions of the electronic ignition system, the electronic ignition module is often placed in an environment h...[Details]
In the past 20 years, although the inverters that use power transistors (GTR) as inverter power devices, 8-bit microprocessors as control cores, and realize asynchronous motor speed regulation acco...[Details]
In order to ensure that lighting-grade white light LEDs can not only be well applied but also achieve high utilization efficiency, first of all, it is necessary to meet certain application conditions,...[Details]
1 Introduction
The coke oven gas recovery system is mainly composed of a gas tank and a pressure reducing station. While realizing the recycling and reuse of coke oven gas, it also plays an imp...[Details]
IP STB interactive services that are constantly updated
The interactive digital content services that can be provided through the television system include television on demand (Vo...[Details]
O Introduction
For people who are in the wild, a question that they are more concerned about is the altitude of the place where they are. However, there are very few such products on the mar...[Details]
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Analogue and Mixed Signal
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