UM-4/122JFFREQ1

In December 2020, QuantumScape announced a breakthrough in the battery field. Its solid-state lithium metal battery can be charged to 80% in 15 minutes, and can extend the range of electric vehicles ...[Details]

1. Preparation before measurement ① Check whether there is any debris or oil on the jaws of the meter. Clean it before measuring. ② Carry out mechanical zero adjustment of the instrument. 2. Measur...[Details]

Over the past two years, the global automotive market has witnessed a rapid surge in demand for electric vehicles. Although the COVID-19 pandemic has severely affected the automotive market, electr...[Details]

Automatic on/off circuit design Abstract : This paper introduces a simple, convenient and reliable on/off circuit. The circuit uses a D flip-flop and cooperates with software processing to realize ...[Details]

DC ammeters generally can directly measure currents on the order of microamps or milliamperes. For measuring currents of several amps, a special shunt can be set up in the ammeter; for measuring curr...[Details]

A signal generator is a device that can provide electrical signals of various frequencies, waveforms, and output levels. It is used as a test signal source or excitation source when measuring the amp...[Details]

Service-oriented computing represents a prospect and platform that has the potential to change the enterprise. It is a new generation of distributed computing platform and a carrier and application p...[Details]

PHEV vs HEV After talking about pure electric vehicles, let's compare PHEV and HEV. Although the total number of these two is much smaller, PHEV (10,361 units) is much smaller than HEV (27,721 units)...[Details]

1 Introduction Single-phase sine wave inverters are widely used in industrial production. Once a fault occurs, it will not only affect the normal production, but also cause serious economic losses. ...[Details]

      The old wizard's golden rule that a bigger chip can kill a person seems to have become ineffective on smartphones. 　　Although the "bottom" of smartphone cameras has gradually become larger, i...[Details]

Household photovoltaics are booming. Since 2013, China's household photovoltaics have experienced rapid development from the beginning to a blowout. According to the figures given by the China Phot...[Details]

For automobiles, the development of new energy has become the most mainstream direction. In recent years, the Chinese automobile market has ushered in the "charging" era, and the endless emergence of...[Details]

This article guides the user in selecting the appropriate transformer for signal conditioning in the front end of a high-speed analog-to-digital converter (ADC). It also explains how to properly se...[Details]

Since the power consumption of 5G mobile phones is more than twice that of 4G mobile phones, in the 5G era, the problem of mobile phone heat dissipation is still a difficult problem for the industry ...[Details]

This paper designs a wireless RF transceiver system based on wireless transceiver chip Si4432 and C8051F930 microcontroller. The system consists of a transmitting module and a receiving module. The...[Details]