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1. Pin identification of junction field effect transistor: The gate of the field effect tube is equivalent to the base of the transistor, and the source and drain correspond to the emitter and co...[Details]
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51 single chip microcomputer motor PWM speed control system Hall speed meter temperature detection 4 This system consists of STC89C52 single chip microcomputer, LCD1602 liquid crystal display, L298N ...[Details]
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Electronic measuring instruments can be roughly divided into the following categories according to their working principles and uses.
Multimeter: Analog voltmeter, analog multimeter (i.e. pointer mul...[Details]
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There are many types of microcontrollers. A PIC (Peripheral Interface Controller) is an integrated circuit (IC) used to develop and control peripheral devices. It is a CPU with decentralized (multi...[Details]
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On the afternoon of February 4, Zhongxinhang and the People's Government of Futian District, Shenzhen officially signed the "Strategic Cooperation Framework Agreement", which marked that the compan...[Details]
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1. The function of LED chip:
LED chip is the main raw material of LED, and LED mainly relies on the chip to emit light.
2. The composition of LED chip
Mainly composed of several e...[Details]
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Measuring principle: This instrument is designed based on the velocity-area method principle for open channel flow measurement. By measuring the flow velocity, the flow rate Q = V·S (S is the cross-s...[Details]
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According to foreign media reports, Keysight Technologies has released solutions for testing and measuring connected vehicle technologies, including automotive cybersecurity programs to verify the re...[Details]
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Should T8LED lamps be subjected to a withstand voltage test before they are aged after manufacturing? Some manufacturers skip this step and ship them directly after aging. Why? The answer is that the...[Details]
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The structure of the buzzer on the microcontroller is very simple As long as you give it a 0, it will "call". The principle of making it sing is very simple. The volume of the sound is fixed. By ch...[Details]
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background
Due to the high level of knockoffs and the complexity of current ECU (Electronic Control Unit) devices, some special testing methods are needed. The method of testing systematic erro...[Details]
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On March 28, data released by Shanghai Steel Union showed that the prices of some lithium battery materials fell on that day, with battery-grade lithium carbonate falling by 4,000 yuan/ton, with an av...[Details]
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Crack detection is an effective application area, allowing the vehicle body to move, with a maximum measurement range of up to 1500mm, a measurement frequency band of 20KHz, and the deformation of ...[Details]
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The biggest feature of LED light sources is their long lifespan, which can reach 50,000 to 100,000 hours. It is not practical to monitor their light decay over a long period of time. Therefore, this ...[Details]
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Test products: Car audio and video monitoring board and 24V power board
Leimao laboratory temperature and humidity: 26 degrees, 61%
Test standards: static electricity, surge, load d...[Details]