How to build a scalable thyristor-based anti-theft alarm
This is a simple anti-theft alarm circuit thyristor. Its functions include automatic entry and exit delays-Bell is regularly shut off and reset. It is designed to be used with normally closed input device…
There are four common LCD monitors:
1.TN-LCD (Twisted NemaTIc-LCD, Twisted Nematic LCD) 2.STN-LCD (Super TN-LCD, Super Twisted Nematic LCD)
3. DSTN-LCD (Double layer STN-LCD, double layer super twisted nematic LCD) 4. TFT-LCD (Thin Film Transistor-LCD, thin f…
As an important part of the urban public transportation system, there are many types of urban rail transit, including subway, light rail, suburban railway, tram, and suspension train, which are known as the "aorta of urban transportation". Judging from the cu…
1 Introduction
With the development of society, video surveillance technology has been widely used in all walks of life. How to allow users to monitor anytime and anywhere, mobile phone mobile monitoring system provides a good solution. Through the combination …
Circuit principle:
The circuit is shown in Figure 9-68. TDA1524A is mainly suitable for DC volume tone balance control in HI-FI audio system. It avoids the noise generated by the potentiometer for volume tone adjustment directly, and here only one potentiometer…
The video conference system established by public security systems at all levels across the country has played a very important role in the rapid response emergency communication guarantee and the smooth flow of police orders. In view of the fact that this equipment ca…
British HINARI brand audio, in 1360 ~ 1500 yuan. The machine has remote control, laser, recording, radio, TV sound, surround sound and other functions. The appearance is simple and detailed, the frequency response of the power amplifier is 60HZ ~ 20KHZ, the signal-to-n…
Digital mobile TV receiver chip manufacturer DiKang (DiBcom) recently unveiled the "2010 Third Mobile TV Industry Summit Forum" in Qingdao. Ms. Xu Xiaye, General Manager of Dikang China, delivered a wonderful speech titled "Bringing New Development Oppor…
Automobile safety is an issue that manufacturers and consumers are paying more and more attention to. In addition to the familiar electronic systems such as ABS, EBD, and ESP, a few days ago, an anti-navigation pilot technology called AnTI Sleep Pilot (ASP) gradually e…
Digital video processing has always been a hot issue in the application of multimedia devices. There are many standards for digital video, and it is constantly evolving. Therefore, the system design must be able to support a wider range of video formats as much as poss…
In recent years, energy saving has become a hot topic in new automotive technologies and trends. Looking back at the past 20 years, the electronicization of cars is mainly driven by drivers for more comfortable and luxurious equipment, such as electric windows, electri…