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As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
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In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
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1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
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1 Introduction
Building Automation System (BAS) is a distributed monitoring system (DCS) designed according to distributed information and control theory. It is the result of the mutual de...[Details]
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1 Introduction
With the development of control, computer, communication, network technology, etc., a new control technology, namely fieldbus, has emerged in the field of industrial control...[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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Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]
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Today's automotive application developers face numerous design challenges as modern cars add more electronic functionality, while the need for lower power consumption and smaller printed circuit bo...[Details]
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Current sensing in automotive applications includes controlling the current through solenoids and injectors. For example, during diesel injection, we rapidly increase the current to the induction i...[Details]
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1. Self-test of lithium battery capacity
The nominal capacity of the CECT9898 OEM mobile phone lithium battery is 3800mAh, and its battery volume is comparable to the 1500mAh battery of ot...[Details]
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This article introduces the advantages of outdoor full-color SMD display and the performance parameters of the dedicated outdoor full-color SMD used, which will help people understand and promote...[Details]
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With the development of communication technology, traditional analog walkie-talkies can no longer meet people's needs, and the digitization of walkie-talkies is imperative. The rapid development of...[Details]
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1. Design Overview
This design uses the USB port as the power supply port, uses the DS18B20 temperature
sensor
to collect temperature information, uses the AT89C2051 single-chip mic...[Details]
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1 Neutral point grounding method
In the early days, my country stipulated that the neutral point grounding methods of power systems should be divided into two categories: large grounding short...[Details]
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The figure below is a schematic diagram of a high-efficiency, high
-power-
factor
LED driver circuit
.
This circuit is developed based on HV9931 and adopts non-isolation me...[Details]
stm32/stm8
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