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Radio frequency identification (RFID) is a contactless automatic identification technology that can automatically identify the target object and obtain relevant data through radio frequency signals.
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1. System Overview
The flameproof vacuum feeder switch for mines (hereinafter referred to as the feeder switch) is mainly used in coal mines. It is used as the main switch or branch switch of the...[Details]
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In addition to the visual impact brought by high-definition video, the audio quality has also been greatly improved, which can bring you a more realistic on-site effect. So, what are the current ma...[Details]
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The figure below shows the principle of using a fiber optic Doppler meter to measure fluid flow rate. When the fluid to be measured is gas, the scattered light will be very weak. At this time, a high-...[Details]
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Use photosensitive film exposure to make
PCB
! This method
The
PCB precision can be less than 0.2mm.
1. Preparation
Tools
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This article introduces a music doorbell that does not require buttons. As long as the visitor stands in front of the doorbell, the doorbell will automatically sound. The circuit principle of the mus...[Details]
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The voltage in the telephone line is 20V. When a call comes in, the voltage of the telephone line rises to 48V and the phone rings. When the phone is picked up to answer, the voltage of the telepho...[Details]
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"Bear" subwoofer
Subwoofer playback is unforgettable with its powerful, deep and soul-stirring effect. With the popularization of home theaters and the continuous imp...[Details]
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ADSP-CM40x integrates the industry's highest precision analog-to-digital converter and the fastest ARM Cortex-M4 core, fully meeting the demanding performance requirements of the next generation of i...[Details]
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In order to effectively predict ground bounce, four factors need to be known: the 10~90% switching time of the logic device, the load capacitance or resistance, the pin inductance and the switchin...[Details]
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introduction
Image coding and decoding technology is the key to multimedia technology. H. 264/AVC is the most advanced video compression technology in the world. Its main features are the ...[Details]
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GAL is the abbreviation of many English words, which are related to electronics, physics, games and other fields, but in the electronics industry it refers to Generic Array Logic, which is one of the ...[Details]
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SD 3.0-Compliant Level Shifter with Integrated Automatic Direction Control, EMI Filter, and IEC 61000-4-2 ESD Protection
Nijmegen, (February 15, 2022): Nexperia, a high-volume expert in ...[Details]
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describe
The LTC
®
6416 is a differential unity-gain buffer designed to drive 16-bit ADCs with extremely low output noise and excellent linearity at frequencies exceeding 300MHz. The d...[Details]
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After the model is built, the coefficients of the 16th-order FIR digital filter need to be determined. Here, the FDATool filter design tool in Matlab is used to determine the filter index:
(1) De...[Details]