-
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
-
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
-
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
-
1. Introduction
AS-Interface bus technology is an intelligent network that uses a single cable to connect sensors and actuators to controllers, transmit data, and provide power. It can be used...[Details]
-
In the past 20 years, although the inverters that use power transistors (GTR) as inverter power devices, 8-bit microprocessors as control cores, and realize asynchronous motor speed regulation acco...[Details]
-
IP STB interactive services that are constantly updated
The interactive digital content services that can be provided through the television system include television on demand (Vo...[Details]
-
The construction of voltage and current feedback amplifier application circuits is generally the same, except for a few key points.
Current feedback amplifiers have higher sl...[Details]
-
0 Introduction
The sense of smell is closely related to human life. In daily life, many industries including tobacco, food, cosmetics, etc. still need human sense of smell to identify and judge samp...[Details]
-
With the development of military equipment, its functions are becoming more and more powerful, the equipment is becoming more and more complex, and the requirements for test systems are becoming highe...[Details]
-
Angle sensors are often used in measurement and control systems to collect various angle parameters or measure the speed of rotating mechanisms. At present, some angle sensors with mature technolog...[Details]
-
High brightness LEDs (HBLEDs) are rapidly gaining popularity in the automotive, consumer electronics, and industrial markets. Brilliant colors, long life, and high energy efficiency are some of the...[Details]
-
Beijing time, June 29 early morning news, JPMorgan Chase analyst Mark Moskowitz (Mark Moskowitz) released a report on Thursday, saying that Apple's iPhone 5 will take the lead in the smartphone market...[Details]
-
Beijing time, June 28 evening news, Qualcomm (Weibo) CEO Paul Jacobs said on Wednesday that he would not rule out the possibility of building a chip factory or using the company's cash to ensure the s...[Details]
-
Ultrasonic flow meter
Ultrasonic flowmeter is an instrument that measures flow by detecting the effect of fluid flow on ultrasonic beams or ultrasonic pulses. As a non-contact measuring instrumen...[Details]
-
Preface
For a new antenna, we usually care about its
three main performance indicators:
standing wave
coefficient, gain and radiation pattern. In a suitable microwave darkroom, these th...[Details]