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JD6621 protocol board with AC-DC PWM two connection methods:
1. Using the 431 benchmark inside the JD6621 chip:
- VBUS/GND connects to the positive and negative terminals of the synchrono...[Details]
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We will introduce the buzzer and relay in detail based on the title: (implemented on the basis of basic control of LED lights) ULN2003 Darlington Transistor and 74HC573 Latch The internal structu...[Details]
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White LEDs
are usually
driven
by a constant DC current source
to maintain constant
brightness
. In portable applications powered by a single lithium-ion battery, the sum of the ...[Details]
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China Energy Storage Network News:
On the morning of September 27, 2017, the "China Electricity Council Energy Internet Special Standard Compilation Kick-off Meeting" hosted by the Standardiz...[Details]
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Virtualization already plays a role in many data centers, but future end-to-end virtualization strategies will help data centers reduce power consumption and cooling needs.
Like an invisible avalan...[Details]
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There is an indicator called "load power factor" in UPS, which indicates the ability of this machine to provide active power and reactive power to the load. Because some people misunderstand this i...[Details]
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Passive intermodulation (PIM) effect is a type of HPM effect. Under HPM conditions, HPM enters the electronic system through different coupling paths. Due to its high-power characteristics, traditio...[Details]
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This paper introduces the hardware and software structure and design method of a terminal that uses an ARM9 development board and a GPS module to implement GPS navigation functions.
1 GPS navi...[Details]
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According to the latest report from PV-Europe, Fimer, an Italian inverter giant that ranked among the top ten in global inverter shipments before 2020, has changed hands due to creditor bankruptcy,...[Details]
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On April 9, GigaDevice issued an announcement stating that on April 9, 2021, the company received a "Notice on the Implementation Progress of GigaDevice Share Reduction Plan" from the National Integr...[Details]
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Modern rectifier chargers are divided into two types: buck type and boost type. The buck type is mainly used when the UPS battery pack voltage is lower than a certain value of the input AC peak vol...[Details]
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On February 20, 2023, National Technology officially launched the N32A455 series automotive-grade MCU in Shenzhen, which has the advantages of versatility, hardware security and automotive-grade hi...[Details]
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What is a variable frequency motor?
A variable frequency motor is a motor that can run continuously at 100% of the rated load and within the range of 10% to 100% of the rated speed under stand...[Details]
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Preface LiDAR is a distance measurement technology that is increasingly being used in applications such as mobile distance measurement, automotive ADAS (Advanced Driver Assistance Systems), gesture...[Details]
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For decades,
silicon (Si) has been the workhorse of the semiconductor industry—everything from microprocessors to discrete power devices
. However, as modern power-demanding applications su...[Details]