-
On January 24, Apple's core supplier, Han's Laser, released its 2020 performance forecast. According to data, the company's net profit in 2020 was 899 million yuan to 963 million yuan, a year-on-year...[Details]
-
DVD optical head mainly includes objective lens drive system ACT (ACTUATOR) and optical system. Objective lens drive system has two functions, one is to focus the laser emitted from semiconductor l...[Details]
-
The power transformer can interfere with the amplifier through magnetic field, electromagnetic induction and circuit, and is the biggest interference source in audio equipment. Therefore, it is nec...[Details]
-
At present, semiconductors, as a basic and leading industry, have become an important pillar of world economic development.
Against the backdrop of a complex international environment and incr...[Details]
-
Although the iPhone 12 mini and iPhone 12 Pro Max, which may attract more attention, will not be available for pre-order until November 6, the iPhone 12 and iPhone 12 Pro took the lead last Friday. ...[Details]
-
I spent a day at the auto show today. Since electric vehicles were promoted around smart cars this year, there were fewer electric vehicle platforms and battery technologies on display than in 2019. ...[Details]
-
Refer to Keil\C51\HLP\C51.pdf and A51.pdf documents, examples and instructions are as follows: set PATH=%PATH%;G:\develop\keil\C51\BIN;G:\develop\keil\C51\INC;G:\develop\keil\C51\LIB set C51_LIB=G:\d...[Details]
-
On January 29, Cambrian released its earnings forecast, saying that the company expects to achieve operating income of 670 million to 750 million yuan in 2021, an increase of 45.99% to 63.42% over th...[Details]
-
The following circuit is used to drive a 3V powered micro DC motor. This motor has two leads. By changing the polarity of the two leads, the motor can be reversed. The drive circuit is required to be...[Details]
-
Speaking of the world's three major smartphone operating systems, do you know which ones they are? We have talked to you in previous articles. The world's three major mobile phone operating systems a...[Details]
-
The main and auxiliary windings of a single-phase motor have a total of 4 lead wires: the main winding is directly connected to the single-phase power supply, and the auxiliary winding is connected...[Details]
-
The internal structure of the transistor
is two PN junctions formed by three layers of semiconductor regions.
Structural features of the transistor:
(1) The base region...[Details]
-
According to a survey by TrendForce, driven by the stay-at-home economy and relief packages, TV sales in North America hit a record high for the same period, pushing up global TV shipments to 49.96 m...[Details]
-
Recently, the Stellantis Group, which owns brands such as Jeep, Fiat, Citroen, Peugeot, and Alfa Romeo, has chosen to use Valeo's third-generation lidar to equip a variety of models of its brands sta...[Details]
-
With the rapid development of wireless communication systems, the demand for high-efficiency RF power amplifiers has gradually increased. How to improve
the working efficiency of
power amplifier...[Details]
stm32/stm8
京公网安备 11010802033920号
EEWORLD