Some microcontrollers are powered by 1AA or 2AA batteries. In order to ensure that the working voltage of the microcontroller is between 2.5 and 5.0, a DC-DC boost circuit is needed. The boost circuit...
Group buying of real6410 development boards. Our group buying activities have been going on since the beginning of the year, but due to problems with supply and netizens' preferences, they have never ...
Due to cost constraints, the cost of CCD chips needs to be controlled within 100 yuan. We haven't found a suitable one yet (needs to be above 60fps). Now I have a stupid idea, but I don't know if it c...
Following the last USB debugging, this time I want to try the touch button, and then send the key value to the host through the USB port. Data captured by USB:Code for the test part:The principle of t...
The above picture is the optocoupler input circuit that I often use. I have never studied it before.
Question 1: What is the purpose of the 300 ohm resistor R2 in the circuit?
Question 2: After the sw...
I recently looked at the arm7 code and saw the interrupt function void _irq IRQ_Expection(void). What I want to ask is what is this "_irq"? ? ? ? Has it been defined before? ? ? ?...
UHF and HF are both general technology categories, but each category has independent supporting protocols. HF is more consistent in the 13.56MHz frequency band, although there are many internation...[Details]
The hardware circuit principle is shown in Figure 1. In the specific design, each part should consider the anti-interference problem to minimize the impact of interference on the performance of the...[Details]
introduction
Video surveillance systems are widely used in industrial, military and civil fields, playing an important role in the security and environmental monitoring of these industries...[Details]
Among the many candidate standards for China's mobile TV, the CMMB standard proposed by the Broadcasting Science Research Institute of the State Administration of Radio, Film and Television is aime...[Details]
Introduction With the continuous development of economy, people's demand for automobiles is increasing day by day. Correspondingly, automobile consumer groups are becoming more and more mature. It...[Details]
Overview
In recent years, the vigorous development of integrated circuits has created a huge space for the research and application of digital circuits. FPGA has low power consumption, high re...[Details]
Introduction
The MAX2116 P1db data is measured at specific combinations of RF and baseband gain over the adjustable range of these two gains. These data can be used to select gain control se...[Details]
IPTV (Internet Protocol TV or Interactive Personal TV), also known as interactive network television, is a new technology that uses broadband network infrastructure, takes home televisions or comp...[Details]
In recent years, the development of automotive electronic technology has significantly improved vehicle safety performance. One of the technologies that is expected to be widely used is the tire p...[Details]
In the process of RF transceiver application, adjusting the processing gain (PG) of the direct sequence spread spectrum communication system (DSSS) can obtain excellent anti-noise performance, whic...[Details]
Portable products are generally powered by batteries. Due to cost and size considerations, there is a trend to reduce the number and size of batteries used in design. If the number of batteries is ...[Details]
When it comes to ATX power supply, people will think of two "classic" ICs: pulse width modulation chip TL494 and voltage comparator LM339. The new dedicated control chip AT2005B has the functions ...[Details]
0Introduction
Microactuators, as driving components of microelectromechanical systems (MEMS), have been widely studied. In recent years, actuators made of hard magnetic and soft magnetic m...[Details]
The full name of RFID is Radio Frequency Identification, which uses radio frequency to realize data transmission between programmable controller (PLC) or microcomputer (PC) and identification, ther...[Details]
1 Introduction
In many communication systems, the base station usually sends a training sequence for the terminal to synchronize with the system. The synchronization here includes time syn...[Details]
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