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Recently, Huawei has added a number of new patent information, including the "autonomous driving navigation method, device, system, vehicle-mounted terminal and server" patent, which has been authori...[Details]
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High-frequency operation of
the
switching
power supply
(SMPS) allows the use of small passive components, while the hard
switching
mode will cause increased switching losses. I...[Details]
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There are usually two ways to achieve delay: one is hardware delay, which requires the use of timers/counters. This method can improve the CPU's work efficiency and achieve precise delay; the other i...[Details]
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1. Digital tube display principle: The digital tube is actually composed of 8 LEDs, divided into a, b, c, d, e, f, g, dp, and the digital tube is divided into common cathode (left, high level light...[Details]
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1. Introduction
Voltage stability is particularly important in systems such as motor drives and UPS. Undervoltage and overvoltage protection are essential. Therefore, the reliability and s...[Details]
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The new lithium-sulfur (Li-S) battery prototype of the British company OXIS Energy has been successfully tested, with an energy density of up to 471Wh/kg, and is expected to increase to 500Wh/kg in t...[Details]
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The sound is broken (chopping): severe harmonics and intermodulation cause distortion, there is a "puff" sound, the top has been cut flat, and the distortion is greater than 10%.
The sound is hard:...[Details]
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The digital multimeter switching power supply circuit (1.5V to 9V) is shown in the figure. This circuit is an intermittent oscillation boost circuit. BG1, L1, L2, C1, etc. form an oscillator. BG1 i...[Details]
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1. Use analog method to measure DC current (1) The DC current range of an analog multimeter is generally composed of a microampere meter head (40µA~100µA) connected in parallel with a shunt resistor....[Details]
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#include reg52.h #define uchar unsigned char #define uint unsigned int #define long unsigned long /* Task_creat(1),Task_creat(2),Task_creat(3) ... ... Task_destroy(2) ... ... Task_destroy(1) ...[Details]
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Bandgap width is an important characteristic parameter of semiconductors. According to the different energy band structures of semiconductor materials, semiconductor materials can be divided into two...[Details]
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1. Introduction
In the fields of power system automation control and other industrial control, civil equipment such as shopping mall sales systems, etc., the external communication interface o...[Details]
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How big a chip does our design need? How fast can our design run? These are two questions that often bother engineers. For the first question, we may be able to use a relatively large chip to imple...[Details]
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The most ideal state of electromagnetic flowmeter is that the measuring medium is full and the fluid continues to flow, without stopping or interrupting the flow. However, as a variety of working site...[Details]
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This article will introduce methods of driving a brushed motor using a "single switch circuit" and a "half-bridge circuit." Both methods are applicable to DC drive and PWM drive.
Driven ...[Details]
DIY/Open Source Hardware
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