2SD1987

Introduction Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]

From the PIC16F946 datasheet, we know that there are two ways to write values ​​to the LCD for display: 1. Directly write the value to LCDDATA1~LCDDATA23 2. Use disconnect t...[Details]

A standard cell is an electrochemical cell used as a voltage reference standard in many electrical standards laboratories . If properly maintained, standard cells are very stable. The ...[Details]

Capacitors are basic components in various electronic devices and are widely used for bypassing, coupling, filtering , tuning, etc. in electronic circuits. However, to use capacitors,...[Details]

1. Disadvantages of choosing too high a voltage level Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]

Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]

0 Introduction High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]

1. Overview At present, an information revolution is in the ascendant around the world, led by microelectronics, computers and communication technologies, and centered on information technolog...[Details]

1 Introduction With the improvement of people's quality of life, lamps are no longer just basic indoor lighting tools, but also a kind of practical art for architectural decoration. When ther...[Details]

With the rapid development of wireless digital communication , more challenges have been raised for integrated circuit design and testing. In the product design stage, in order to ensure t...[Details]

The launch of Shenzhou IX is imminent, and Tiangong is welcoming visitors again. Yesterday, Professor Fu Qiang, Vice President of the Institute of Science and Industrial Technology of Harbin Instit...[Details]

Overview By transmitting ultrasonic energy into the human body and receiving and processing the returning reflected signals, phased array ultrasound systems can generate images of organs and s...[Details]

Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]

Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in the RF bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]

0 Introduction In the design and construction of communication systems, communication power supply is called the heart of the communication system. The power supply system will dire...[Details]