[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:04[/i][p=null, 2, left][font=微软雅黑][size=3][color=#b00500]Goodbye! Netbooks! [/color][/size][/font][/p] [p=null, 2, left][font=微软雅黑][siz...
Please teach me how to convert high and low level signals into corresponding output analog voltage signals. The reference voltage is 2.5V, the high level is above 2.5V, and the low level is above 2.5V...
I beg you to know how to use g2553 to read and write sd cards. The main reason is to store the AD converted value into the sd card!! The ad conversion frequency is 230hz and the sd card used is 4g. I ...
[color=#000][font=Arial]I rewrote the main part of this program. The program uses the watchdog as a normal timer and scans the digital tube in the watchdog interrupt. In addition, I added a display bu...
Recently, there was a case that required measuring a 1200V high voltage with a frequency of 20KHZ and a sine wave. It was necessary to accurately measure the voltage value and frequency as well as whe...
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
With the rapid development of cities and the improvement of citizens' living standards, the number of various vehicles in cities is growing, and the demand for parking spaces in major commercial an...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Electric bicycles have long been a means of transportation for lower-income groups due to their affordability. The largest concentrated expense in the use of electric vehicles is the cost of replac...[Details]
Nowadays, more and more people have digital cameras. The convenience and speed of digital cameras have gradually replaced film cameras and become the main tool for people's daily photography. The n...[Details]
The power supply is the core component of a computer. Although it is not of high value, all computer components rely on the switching power adapter to provide energy, so the stability of a power su...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
1. Introduction
With the rapid development of computer technology, communication technology, and integrated circuit technology, the large-scale application of field control instruments and equ...[Details]
(1) Open circuit voltage of the battery
(2) Internal resistance of the battery
(3) Battery operating voltage
(4) Charging voltage
Charging voltage refers to the voltage applied ...[Details]
Mobile and portable
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