A New Method for Harmonic Current Detection in Square Wave Active Filter With the development of power electronics technology, the application of power electronic devices has become increasingly wides...
If the pyboard fails for some reason, you can restore it to factory settings, just like restoring the Windows system with ghost. [list] [*]Connect the USB cable[*]Press and hold the USER key, then pre...
Requirements: ① Use 8*8 LED dot matrix as character display ② Display all uppercase English characters ③ Display mode: sequential display and continuous display. Display frequency is adjustable ④ Use ...
[b][size=4][color=#ff0000]Activity time: [/color][/size][/b][color=#3e3a39]From now on - May 3, 2015 [/color] [color=#3e3a39] [/color][b][size=4][color=#ff0000]Activity process: [/color][/size][/b] [l...
CC1101, my watch is broken and I want to replace it. I downloaded a lot of programs from the Internet, but none of them worked, including the one given by Taobao sellers. The program is optimized, no ...
UHF and HF are both general technology categories, but each category has independent supporting protocols. HF is more consistent in the 13.56MHz frequency band, although there are many internation...[Details]
Blood pressure is one of the important physiological parameters of the human body. Accurate measurement of it is conducive to early detection and identification of hypertension types, and to the pro...[Details]
Abstract: Based on the research of the communication process between the reader and the RFID tag, combined with the EPC C1G2 protocol and ISO/IEC18000.6 protocol, a digital circuit of RFID tag appl...[Details]
Power semiconductors and reactive components (capacitors and inductors) are ubiquitous in today's electrical equipment. In normal operation, they can cause two undesirable side effects on the AC line ...[Details]
Anyone who has owned a laptop computer will have noticed that when running on battery power, their portable device behaves differently than when running on AC mains power—the display dims, the proc...[Details]
With the development of LED technology, the application of LED has expanded from the traditional low-power portable product backlight to medium- and high-power indoor lighting, outdoor lighting, an...[Details]
0 Introduction
The PTZ controller designed with a single-chip microcomputer as the core can control the camera to move over a large range and at a wide angle in monitoring situations, so t...[Details]
1 Introduction
The brushless DC motor uses an electronic commutation device to replace the mechanical commutation device of the traditional DC motor, and has similar mechanical character...[Details]
Ultrasonic tooth cleaning machines have been widely used in the medical field. Most ultrasonic tooth cleaning machines used at home and abroad now use analog oscillation circuits. There are the fol...[Details]
1. Introduction
In recent years, with the rapid development of microwave and millimeter wave technology, higher requirements have been put forward for broadband microwave and millimeter ...[Details]
Part 1 Current status of electricity metering in various places
Current status of electricity metering
a) Power companies still mainly use mechanical energy meters and low-cost e...[Details]
introduction
In an increasingly information-based society, computers and networks have fully penetrated into daily life. For individuals, what is needed is not just documents placed on the...[Details]
1 Introduction
Heart disease is one of the major diseases that seriously threatens human health and life. Statistics show that about 60% of heart patients die at home. If these patients ca...[Details]
Today's mobile phones and other portable devices are becoming smaller and thinner, while integrating more and more new functions or features, such as large-size displays, high-resolution camera mod...[Details]
introduction
Radio Frequency Identification (RFID) technology is an emerging non-contact automatic identification technology with broad application prospects in many fields such as industr...[Details]
Test/Measurement
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