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用圆形LED改制异型或复色LED
常见的圆形塑封发光二极管的直径有φ3、φ3.5、φ4、φ10等多种。其外形如图所示。
图是4-3(b)、(c)、(d)用锉刀和钢锯加工成的发光二极管。加工后需用竹签缠脱脂棉,沾牙膏摩擦抛光。如嫌不光泽,可将整个发光二极管往氯彷液中放一下,叙述提起,然后放在通风的地方晾干,这时LED面貌焕然一新。
图4...[Details]
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At 9:30 am on December 29, 2021, the second creditors' meeting and investor group meeting of the substantive merger and reorganization case of Tsinghua Unigroup and seven other companies was held thr...[Details]
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1 Introduction 1.1 Introduction to LPC1752 and AT24C08C LPC1752 is a Cortex M3 chip launched by NXP, with a maximum operating frequency of 80M AT24C08C is an I2C serial EEPROM from Atmel, replacing...[Details]
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0 Introduction
In order to improve driving performance and meet higher emission level requirements, the new generation of electronic engine management systems requires electronic accelerator pe...[Details]
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Abstract: Aiming at the current serious fatigue driving behavior, a fatigue driving detection device is developed. An infrared emitting diode and two infrared receiving heads are installed on the fr...[Details]
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In various DSP application systems, data communication with other devices or systems is often required. Universal Asynchronous Receiver/Transmitter (UART) is a commonly used communication mode. Whe...[Details]
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Spectrum analyzers and oscilloscopes are both commonly used electronic measuring instruments and are widely used in many industries. There are also great differences between spectrum analyzers and os...[Details]
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As shown in the figure,
this is a
power supply
frequency noise filter
circuit
. This
circuit
is a double-T filter that can be used to
filter out the noise of
the mixed 50H...[Details]
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In recent years , electric vehicles have developed rapidly, but problems such as spontaneous combustion and fire have also become the focus of public attention. Therefore, thermal runaway protection ...[Details]
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Brushless DC motors not only inherit the advantages of DC motors, such as good speed regulation and starting characteristics, and large stall torque, but also greatly simplify the structure of the mo...[Details]
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Xiaomi Mobile officially announced that the Xiaomi CC9 Pro will be equipped with a 100-megapixel camera. Later, the official also released actual sample photos of the Xiaomi CC9 Pro to show the image...[Details]
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1. Introduction
Relay is one of the key components of automatic control systems, remote control and telemetry systems, and communication systems. It is widely used in aviation, aerospace, electroni...[Details]
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On October 30, the 2020 China (Shenzhen) Integrated Circuit Summit was held. Jia Jun, vice president of marketing for China at Pudifei, delivered a speech entitled "Insight into Opportunities: Trends...[Details]
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This paper proposes a hardware circuit design based on the STC single-chip microcomputer learning platform, which uses a new single-chip microcomputer model STC12C5410AD, and adds some serial inter...[Details]
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Castrol joins hands with Beijing Jianheng Certification Center and Zhonghong Science and Technology to launch immersion thermal management energy storage solution
(October 16, 2024, Beijing,...[Details]