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1. Preparation before measurement (1) Press ON/OFF for one second to turn on the machine. The test voltage is preset to 500V for continuous insulation resistance measurement. (2) When the battery sym...[Details]
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1. How to modify device descriptors or string descriptors dynamically?
In the file usbd_desc.c, the descriptors associated with the device and string can be dynamically adjusted through the GetDes...[Details]
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On December 24, the State Grid Chongqing Electric Power Company's cloud platform, data middle platform, and Internet of Things management platform were launched for trial operation, and the company...[Details]
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At a time when the strategy of launching a large number of products is in vogue, Meizu's product layout of focusing on quality rather than quantity is obviously contrary to the "trend". But it is pre...[Details]
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From 2011 to 2021, China's photovoltaic industry has completed its transformation from follower to leader.
In the past ten years, China's photovoltaic manufacturing capacity, installed capacit...[Details]
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With the rapid development of multimedia technology, network technology and the advent of the post-PC era, it has become possible to use embedded systems to realize applications such as remote vide...[Details]
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A simple automatic shutdown circuit is installed on the DT-830 digital multimeter. The device is small in size, simple in structure, and does not require debugging. In principle, it can be suitable f...[Details]
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Since the project needs to use a timer to capture 2-channel PWM input, I have studied the capture of multi-channel PWM in the past two days. Function implementation: Modify the value of the macro def...[Details]
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1. Permanent magnet synchronous motor
Variable frequency air conditioners have developed rapidly due to their energy saving, more stable indoor temperature, low noise and higher comfort. It has b...[Details]
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At 19:30 on April 19, Meizu will hold a screening of its new spring products, and today the official released the latest pre-launch poster. The official copy reads: "Run to spring and have fu...[Details]
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The current direction of each phase of the three-phase AC power supply is constantly changing back and forth. When three-phase AC power is input into a three-phase AC motor, each phase of AC power ...[Details]
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The International Association of Privacy Professionals (IAPP) announced today that Apple CEO Tim Cook will host this year’s Global Privacy Summit, which will be held in Washington, D.C. from April 11...[Details]
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On January 24, the Fifth Session of the 13th Hubei Provincial People's Congress opened in Wuhan. Hubei Governor Wang Xiaodong reported to the congress on behalf of the Hubei Provincial People's Gover...[Details]
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Buck-type PWM DC/DC full-bridge converter is shown in the figure. Four switch tubes S1~S4 form a full-bridge PWM inverter. High-frequency PWM pulses control the on and off of the switches in turn. ...[Details]
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The MAX44251/MAX44252 are 20V, ultra-precision, low-noise, low-drift amplifiers that provide near-zero DC offset and drift by using a patented autocorrelating nulling technique. This method continuou...[Details]
Medical Electronics
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