There are three common current sensing methods for switch mode power supplies: using a sense resistor, using a MOSFET RDS(ON), and using the DC resistance (DCR) of the inductor. Each method has advant...
[i=s] This post was last edited by Zhang Feng on 2016-7-26 09:06 [/i] I feel that when GLOBAL_Q is 24, the function _IQmpy(a,b); seems to calculate the value in Q0 format if a is in Q0 format and b is...
I recently encountered a problem about relay backtest. Can you guys help me take a look?
The schematic diagram is as follows:The actual load is the LED light. Now we need to test the voltage and curre...
After the launch of STR91X for a long time, we have been designing network protocol stacks and new hardware, and are currently preparing to launch several products: 1. Network converter: Can--Ethenet,...
This question is very simple, as the title says: That is, for a specific requirement, suppose we use a family of sub-functions that can be executed independently to complete it. There must be more tha...
I use AD external reference voltage, and set the reference voltage selection bit to 0, that is, VR + =AV CC , VR -=AV SS , AV CC provides 3.3V voltage, can I give AV SS a negative voltage? For example...
1. Introduction
This design was made for participating in an electronic design competition. It effectively solved the problem of the operation and control of an electric car on a seesaw. The s...[Details]
With the advent of increasingly powerful processors, image sensors, memory, and other semiconductor devices, as well as the algorithms that enable them, computer vision can be implemented in a wide...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
From the PIC16F946 datasheet, we know that there are two ways to write values to the LCD for display:
1. Directly write the value to LCDDATA1~LCDDATA23
2. Use disconnect t...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
As people's requirements for safety and comfort in the process of driving cars continue to increase, automotive radars are widely used in the car's adaptive cruise system, collision avoidance syste...[Details]
Power technology
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