The Principle and Application of Universal Tone Decoder IC LM567 567 is a general-purpose tone decoder. It provides a saturation transistor to ground switch when the input signal is in the passband. The circuit consists of I and Q detectors. The voltage-controlled oscillator
Read moreYingli successfully developed photovoltaic panels for hyperbolic roofs On December 18, Yingli Group announced that after more than 5 months of research, Yingli Photovoltaic Application Technology Research Institute independently developed the world's first hyperboloid pho
Read moreDesign principle of LM4702 high-fidelity power amplifier device The LM4702 is designed for consumer applications with high sound quality requirements and high power output. The output power of the amplifier can be adjusted according to changes in the supply voltage and the nu
Read moreThe latest version of filtering software on the Symbian 3 operating system helps protect against spam At present, it has more than 2 million users of Am321 public spam reporting and filtering software, and recently launched the latest version v3.4 on the Symbian 3 version of
Read moreAn efficient and practical solution for on-chip knock detection of engine Engine knock and control In modern engine management systems (EMS), knock control is one of the core algorithms. Because frequent knocking can damage the engine, the ECU must take measures to stop knoc
Read moremoxa launches 8/5 port smart plug-and-play industrial Ethernet switch--EDS-308 / 305 series PDF document download Introduction MOXA smart plug and play industrial Ethernet switch EDS-308 / 305 series, provides 8/5 port Ethernet switch to provide an economical solution for yo
Read moreMarket analysis: MEMS packaging moves towards wafer level Traditional MEMS relied on ceramic packaging for a long time. Although effective, the MEMS industry has been brewing into a wafer-level packaging (WLP) technology, and part of the driving force for this transformation
Read moreUSB sound card production method This article introduces a sound card with USB interface, the effect is quite good, the circuit is also very simple. Circuit principle The circuit schematic is shown in Figure 1. PCM2702 (IC1) is a USB interface DAC chip produced by BB, a su
Read moreDesign and Implementation of a Low-cost Automobile Security System Based on MMS 1. Introduction With the continuous improvement of people's living standards, personal ownership of cars has become more and more common. However, the subsequent problem of frequent theft of v
Read moreCharacteristics and working principle of LCD Liquid crystal display (LCD) is a very common display now. It has the advantages of small size, light weight, power saving, low radiation, and easy to carry. The principle of a liquid crystal display (LCD) is very different from a
Read more< p> MIMO: New wireless broadband communication technology with unlimited business opportunities With the rapid development of wireless communication technology, people have higher and higher requirements on the performance and data rate of wireless local area networks. In th
Read morePT2262 / 2272 codec integrated circuit principle introduction Introduction of codec chip PT2262 / PT2272 chip principle PT2262 / 2272 is a low-power low-cost general-purpose codec circuit manufactured by Taiwan Pucheng Company, which is manufactured by CMOS process. State add
Read more