With the promotion and implementation of the "Golden Tax Project", the customer base of tax-controlled cash registers is constantly increasing, and the market capacity of tax-controlled cash registers...
[i=s] This post was last edited by paulhyde on 2014-9-15 04:03 [/i] What do you think should be written in the theoretical analysis and calculation mentioned in the intelligent car paper in question C...
I recently wanted to find a chip that can drive 35W LEDs, but such a driver chip is hard to find, so I used CN5609, and planned to connect 3 in series and 3 in parallel, with a constant current output...
In order to measure the electrolytic power supply, I use a Hall current sensor to measure the DC current output by the electrolytic power supply. The voltage signal or current signal output by the Hal...
[i=s]This post was last edited by ohahaha on 2016-4-19 08:43[/i] [color=#3e3e3e][Repost][/color] [color=#3e3e3e]When engineers draw PCBs, they will inevitably encounter some connectors. In China, thes...
Hey guys, I have an ARM development board MDV-STM32-107. I downloaded two sample programs of ST's DAC, one is a step wave and the other is a sine wave. I used an oscilloscope to look at the waveforms....
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
To differentiate their products in a crowded and competitive market, manufacturers of handheld devices often consider battery life and power management as key selling points for cell phones, PDAs, ...[Details]
July 11, 2012, Beijing - Altera Corporation (NASDAQ: ALTR) today announced the launch of 40-Gbps Ethernet (40GbE) and 100-Gbps Ethernet (100GbE) intellectual property (IP) core products. These core...[Details]
1 Introduction
As an emerging microfabrication technology, micro-electromechanical system (MEMS) technology has begun to be applied in various fields. It can integrate functions such as inform...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
On the afternoon of July 10, Beijing time, Taiwan's largest chip designer MediaTek expects its smartphone chip shipments to grow by double digits in the third quarter of this year, and the company is ...[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]
Flooded Batteries
This battery developed in Germany can be used to power flashlights, strobe lights and toys as long as it is filled with water. This battery can be stored for 50 years and can...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
In the single-chip microcomputer system, in addition to display devices, sound devices are often used, and the most common sound device is the buzzer. Buzzers are generally used for some low-demand...[Details]
Introduction
Liquid crystal, as a display device, is widely used in low-power products such as instruments, meters, and electronic equipment with its unique advantages. In the past, the displ...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]
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