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Apple today released iOS 15.4.1 and iPadOS 15.4.1, which came two weeks after the release of iOS 15.4. According to Apple's official upgrade details, the update content is as follows: This update...[Details]
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Application circuit of resettable fuse in LED products
1. High start-up costs
Lighting costs involve not only the initial cost of the lamp, but also the energy cost consumed by the la...[Details]
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The figure above shows a typical DC motor control circuit. The circuit is named "H-bridge drive circuit" because its shape resembles the letter H. Four transistors form the four vertical legs...[Details]
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CommQuest's DBS CQT6020 CASP is a single-chip QPSK demodulator/FEC decoder designed for use in set-top boxes (see Figure 1). The CQT6020 contains all functions from the analog L-band tuner output to ...[Details]
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The DC resistance fast tester is an essential test item for transformers after handover, overhaul and tap change. This article introduces how to calculate the resistance of the transformer DC resista...[Details]
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Compiler programming is a complex topic that requires a lot of expertise even for experienced software engineers. NI LabVIEW software is a multi-disciplinary graphical programming environment t...[Details]
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The alarm is designed to sound the siren only once. That is - when the alarm is activated - the siren will sound for a preset length of time. Then it will turn off and stay off. The alarm will not ...[Details]
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Ultrasonic four-channel ranging: Ultrasonic ranging is implemented in three major parts:
One is the 12864 LCD driver with font library:
code show as below:
//////////////////12864 Driver/////////...[Details]
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Spring is the peak season for influenza, and children have weaker resistance than adults. Parents would definitely prefer a gentler approach rather than taking their children to queue up at the hospi...[Details]
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Circuit diagram of 40 W notebook power supply designed using TOP256EN
Figure 1 shows a flyback power supply designed using Power Integrations' TOPSwitch-HX devices. The adapter power supply uti...[Details]
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The oscilloscope high-voltage differential probe is an indispensable part of the oscilloscope. It mainly serves as a link for signal transmission, transmitting the signal to be tested completely and ...[Details]
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Buzzer sings "Wish you peace" * * ********************************************************************************/ SPK bit P1.4 ORG 0000H LJMP START ORG 000BH INC 20H ;Interrupt service, interrupt...[Details]
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Many microcontroller-based systems have both analog and digital signals. Even systems that appear to be completely digital are not completely digital because of analog effects such as ringing and cro...[Details]
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The power supply structure of the DC/DC power supply module includes: pulse width modulator (controls conversion efficiency), optocoupler (isolates input and output to avoid interference between the ...[Details]
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Event Preview The 2024 Green Low-Carbon Transformation and Energy Storage Technology Innovation Industry-Education Integration Seminar/CFE2024 Southern Flow Battery Energy Storage Industry-Education I...[Details]