Traditional security products include access control, infrared alarm, smoke sensor, camera and video monitoring, etc. The usual alarm center transmits the information of the front end of the alarm (smoke sensor, infrared ...) to the center through the telephone line dial, the
Read moreThe Internet has promoted the further prosperity of the Internet cafe industry. The access methods of various Internet cafes are also different, and the networking schemes are also varied. The current international Internet access solutions include broadband access such as opt
Read moreDoCoMo Beijing Institute launches 8 × 8 MIMO-OFDMA real-time transmission experiment platform Ducomo (Beijing) Communication Technology Research Center (hereinafter referred to as "Beijing Research Institute") has successfully developed an 8-transmit 8-receive m
Read moreDoCoMo Beijing Institute launches 8 × 8 MIMO-OFDMA real-time transmission experiment platform Ducomo (Beijing) Communication Technology Research Center (hereinafter referred to as "Beijing Research Institute") has successfully developed an 8-transmit 8-receive m
Read more3W Filterless Class D Audio Amplification Technology Based on TPA2028D1 TI's TPA2028D1 is a mono 3W filterless Class D audio power amplifier with integrated volume control, dynamic range compression (DRC) and automatic gain control (AGC). The DRV / AGC function can be pro
Read moreAbstract: This applicaTIon note lists the oscillators (OCXO, oven-controlled crystal oscillator, and TCXO, temperature-compensated crystal oscillator) that have been tested and proven to work with Maxim's TDMoP (TIme division mulTIplexing over packets) devices to meet G.826
Read moreAutomobile exhaust has become one of the main sources of urban air pollutants. Governments at all levels have taken comprehensive measures from different aspects such as development planning, urban construction, and energy supply to mitigate the impact of automobile exhaust on
Read moreThrough some easy-to-understand graphics, the basic principles of Orthogonal Frequency Division Multiplexing (OFDM) and its application in mobile communication are described. Starting from high spectrum utilization and anti-multipath fading, the basic principles of OF DM's
Read moreBecause the general stepper motor and driver housings on the woodworking engraving machine do not use aluminum, titanium, magnesium alloy housings for magnetic shielding, they cause interference to the highly sensitive receiver system, making it impossible to work, and pollutin
Read moreBecause the speaker uses a 6.5-inch speaker, the speaker volume is a bit too large for readers with a small desktop space. At the request of readers, this article introduces a small and active multimedia active speaker for the reference of enthusiasts. Speaker selection The sp
Read more1 Introduction After the development of analog era, digital era and network era, video surveillance products have gradually entered the era of high-definition. HD video has a qualitative leap in video quality compared to traditional SD video. In the past, due to many factors
Read more1 Background IP is the development trend of network services in the future, and Ethernet has become the main development direction of IP-based bearer networks due to its superior cost performance, wide application and product support. When deploying carrier-grade Ethernet, ho
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