Hello everyone! I would like to ask if the Class C amplifier needs to reverse bias the base, i.e. Ube, but won’t the transistor be cut off after reverse bias? Thank you...
If I let the program run in the internal ROM for a while, for example, from 0000H to 0016H, and at this time I pull EA low (I connected the pin of P3.4 port to the EA pin, pulling P3.4 low is equivale...
So many things happened in the world in 2020. What happened to me may seem insignificant, but from everyone's perspective, everyone knows their own experience.
My personal fund was not approved in 202...
Semiconductor Industry Online Member System Questionnaire Survey Come and participate in the draw to win a 50-yuan Jingdong card! It can be done in 3 minutes~Event time: From now until September 30Cli...
[i=s]This post was last edited by shuiyuehen1987 on 2015-11-30 09:24[/i] [font=宋体]For example, if there is a magnetic mine in an area, if a mechanical compass is used, the compass will be inaccurate d...
Dear experts, I am currently working on a report that requires the use of FPGA to connect to a headset to capture sound signals and then process and store them. It is really difficult at the beginning...
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
A multi-point temperature control heating control system was designed using the SST89E564RC single-chip microcomputer and a new temperature measuring device. The heating system can be controlled in...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
my country is a big country in agriculture, grain production and consumption. Grains are a necessary condition for our nation to survive and develop. The flour processing industry will exist forever w...[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]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the market have ...[Details]
This paper designs a 16x16LED Chinese character display bar based on single-chip dynamic scanning control, briefly analyzes the principle of Chinese character display, and studies how the LED displ...[Details]
Single-chip microcomputers are widely used because of their small size, powerful functions and low price. This article introduces the method of designing a micro electronic piano using the AT89C51 sin...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
With the rapid development of the national economy, lifting and hoisting operations are used more and more frequently and widely in various fields of economic construction. China has continuously expl...[Details]
Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he ...[Details]
1. The composition and structure of mobile phone lithium battery
Mobile phone lithium batteries are mainly composed of plastic shell upper and lower covers, lithium battery cells, protection c...[Details]
Analog electronics
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