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With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
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A single-chip microcomputer is also called a single-chip microcontroller. It is not a chip that completes a certain logical function, but a computer system integrated into one chip. In general, a c...[Details]
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At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
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We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
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The TPS92210 is a single-stage LED lighting pulse width modulation (PWM) controller. The TRIAC dimmable solution not only regulates the LED current, but also achieves a power factor close to 1. The...[Details]
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0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
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Car lights, whether headlights, fog lights or tail lights, play an important role in driving safety. However, the material of the car lights determines that the probability of damage in a collision...[Details]
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Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
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Introduction
my country's rapid economic growth is mainly due to the development of manufacturing and the acceleration of urbanization. However, urbanization cannot be achieved at the expense ...[Details]
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introduction
Belt drive is a common transmission device used in industrial production. Its commonly used speed detection device is a photoelectric encoder installed at the rotating end of th...[Details]
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1. Basic principles of organic/polymer solar cells
The basic principle of organic/polymer solar cells is to use the photovoltaic effect generated by light incident on the heterojunction of sem...[Details]
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As the electromagnetic environment in space becomes increasingly complex, the shielded cables used to transmit weak signals in the test system are easily affected by external electromagnetic distur...[Details]
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The coking workshop of Tianjin No. 2 Gas Plant is the core of the whole plant's production and an important source of economic and social benefits. Its production automation level and management an...[Details]
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1. Composition of product standard system
LED is a new type of lighting appliance product. LED products include the LED itself, the supporting control devices and the lighting products that us...[Details]
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Abstract Aiming at the harm caused by mobile phone microwave radiation to human body and the incompatibility between mobile communication network and fixed-line network, a PSTN voice gateway using ...[Details]
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