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1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
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The rectified DC voltage is then converted back to AC using power electronics such as insulated gate bipolar transistors.
The output voltage is switched on and off at a high frequency, control...[Details]
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LED is the abbreviation of the English word. Its main meanings are: LED = Light Emitting Diode, a solid-state semiconductor device that can convert electrical energy into visible light. It can dire...[Details]
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The future energy storage hotspot is not coal or iron ore, but lithium. This lightest metal in nature may be the heaviest resource in the future energy landscape. China launched an ambitious electr...[Details]
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Power quality refers to the quality of AC power supplied to the user end through the public power grid. In an ideal state, the public power grid should supply power to users at a constant frequency...[Details]
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In order to reduce the proportion of data transmission time in the entire system processing time index, the data transmission rate should be no less than E1 (2.048Mb/s), and the communication...[Details]
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Usually, indoor lighting is controlled by a switch button. This article introduces a self-controlled lighting circuit, which does not require manual operation, is energy-saving and convenient, and is ...[Details]
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At present, the batteries used in mobile phones on the Chinese market have completed the transition from NiMH and NiCd batteries to lithium batteries, but most people still use lithium batteries i...[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 era of incandescent light bulbs is coming to an end. Throughout the 20th century, Edison's incandescent light bulb stood the test of time and became the standard general lighting tool. But new...[Details]
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For white LEDs
with a forward voltage of 3.5 to 4.2V (at 20mA),
a boost converter is usually required. A charge pump (such as MAX682 to MAX684) can be used together with MAX1916 to form
...[Details]
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The MIC3203 from Micrel
is a hysteretic buck, constant current,
high brightness LED
(HB
LED
)
driver
that provides an ideal solution for interior/exterior lighting, architectural and ...[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]
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LED
has the characteristics of low energy consumption, long life, low heat generation and environmental protection, and has been widely used in many fields, such as:
1 Lighting fiel...[Details]
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Lithium-ion batteries, which have the advantages of high voltage, high capacity, long cycle life and good safety performance, have broad application prospects in portable electronic devices, electr...[Details]
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Analogue and Mixed Signal
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