I want to use an op amp to make a voltage attenuation circuit to measure 3~48V DC signals. Attached is a preliminary circuit diagram, but the power frequency interference problem cannot be solved duri...
With the IR infrared receiving module as an accessory, the development board can remotely control the LED light. Its overall structure is shown in Figure 1.
Figure 1 Overall composition
The pin connec...
An LED lamp at home is broken. This is a common 9W LED bulb. Since it cannot be used, I thought of disassembling it and analyzing it.It is easy to disassemble. Just squeeze the lampshade in front and ...
In the foreseeable future, flexible screen phones will become a unique new category in the smartphone market. While stepping up the research and development of flexible screens, major mobile phone ma...[Details]
On June 10, the announcement of the 40th review meeting of the Science and Technology Innovation Board Listing Committee showed that it agreed to the issuance and listing (initial public offering) of...[Details]
Let's take the startup code of the ARM Cortex_M3 bare core as an example to do a simple analysis. First, three tasks are completed in the startup file: 1. Initialization of stack and heap 2. Locate ...[Details]
1. Automotive EE architecture changes from distributed to domain centralized, promoting communication architecture upgrades Electronic and electrical architecture was first proposed by Delphi (DELP...[Details]
According to digital blogger @数码闲聊站's revelation today, the design of the three models in the Xiaomi 12 series is the family design language of 2022, all of which use a centered hole-punch micr...[Details]
This article mainly introduces how to use the MODBUS to PROFINET gateway PNMD485-K20 of Beijing Weiying Innovation Technology Co., Ltd. (Weiying Innovation) to connect Delta inverter CP2000 to Siem...[Details]
According to foreign media MacRumors, Apple is expected to integrate ambient light sensors into new AirPods in the next few years. These ambient light sensors will be manufactured by ASE Technology, ...[Details]
The research report "Smartphone Application Processor Market Share Tracking in Q2 2019: Qualcomm Remains Leading with 40% Revenue Share" released by Strategy Analytics' Mobile Component Technology Se...[Details]
Abstract: A new charging and discharging circuit topology and its control method are proposed. It is flexible in operation and can make the photovoltaic system work in the best state. It solves t...[Details]
The TTL NAND gate can directly drive a small 4 ohm or 8 ohm speaker without adding any components. Just connect the speaker from the NAND gate output to the ground or power supply, as shown in the fi...[Details]
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Street lights are installed outdoors, and lightning strikes are a very big threat. At the very least, it will cause damage to the street lights, and at worst, it will cause fires o...[Details]
1. What can a single-chip microcomputer do? Currently, single-chip microcomputers have penetrated into every field of our lives. It is almost difficult to find a field without single-chip microcomp...[Details]
The grounding capacitance current of the neutral point insulation system is one of the important parameters of the power system. It is usually measured and calculated using the additional capacitan...[Details]
On November 3, Xiaomi Motor recently explained in detail the battery technology details of SU7 Ultra when answering questions from netizens.
The company emphasized that the r...[Details]