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    Acoustic shock is a short-duration, high-frequency, high-intensity sound caused by telephone line interference or other reasons. It is received by the human ear through the telephone receiver or e...[Details]

summary 　　Starting from the testing requirements of LTE base station equipment and terminal equipment, this article briefly introduces the various test solutions provided by Rohde & Schwarz (herein...[Details]

Transistors can be divided into NPN and PNP types according to polarity. Transistors have 3 pins, so how do we distinguish their polarity and pins? Method 1: You can ask your seniors, colleagues, and...[Details]

Currently, the world's mainstream general-purpose CPU architectures are x86 and ARM, which occupy the vast majority of desktop, server and mobile platforms. China has the Loongson architecture develo...[Details]

1 Introduction Ultrasonic detector is an essential device for non-destructive testing of concrete. This instrument detects parameters such as the travel time, first wave amplitude and main frequency ...[Details]

In 2024, batteries will need to reduce prices while also improving fast charging capabilities. Volume seems to have been engraved in the DNA of Chinese battery companies. For battery companies, ...[Details]

1. Encoder   Figure 1 is a schematic diagram of the encoder  . In the middle is a code disk with a grating. When light passes through the grating, the receiving tube receives a high level. If light ...[Details]

The 500kt/a methanol system of Henan Coal and Chemical Industry Group Zhongyuan Dahua Company adopts Shell pulverized coal gasification technology to produce raw gas. The medium-pressure steam outlet ...[Details]

Yesterday, Lenovo Group Vice President Chang Cheng announced on Weibo that a new phone will be released on May 22. Today, the official announcement of the upcoming new phone is Lenovo Z6 Pro Youth Ed...[Details]

********************************************************************************  * Description: *  * Key scanning program *  * When powered on, turn on the LED at port P00                        ...[Details]

Starting from this month, I will do a monthly review of the power battery market in "Electric Vehicle Observer". In September, on the big side, we can see the change of technology routes, switchin...[Details]

　　Float level gauges are widely used in my country's liquid level measurement industry. They not only provide continuous measurement for enterprises, but are also easy and simple to use. Therefore, t...[Details]

　　With the development of computer, semiconductor and communication technology, the oscilloscope, which has always been a good helper for us to design and debug products, is increasingly widely used i...[Details]

According to a report by foreign media theverge on November 7, the U.S. National Transportation Safety Board recently released a new document, which disclosed some details of Uber's self-driving car ...[Details]

Auto-coupling step-down starting and star-delta starting are two commonly used motor starting methods. They have different effects on the current and torque of the motor during the starting process...[Details]