K1507

Contents The invention relates to an instrument for measuring heat absorption or release by taking cold water or hot water as carrier in a heat exchange loop, and in particular to an embedded ultraso...[Details]

LED driver LED power supply Currently in the general LED lighting market, there are non-isolated designs and isolated driver power supplies. Non-isolated designs are limited to double-insulated produ...[Details]

NOVATHOR L8540 is a highly integrated ModAp smartphone chip released by ST-Ericsson, combining the most advanced application processor in a single mode LTE / HSPA / TD-SCDMA multi-mode modem state. T...[Details]

Not long ago, Huawei's first foldable screen mobile phone became the focus of heated discussion as soon as it was released. How can a square, hard, and untwistable screen be folded? In fact, the fold...[Details]

1. First modify the two files of the u-boot source code         1.1 Change config.mk in the u-boot root directory,         #DBGFLAGS= -g to: DBGFLAGS= -gdwarf-2            1.2 Change PLATFORM_CPPFLA...[Details]

1. Grounding meter A grounding megometer is usually used to measure the ground resistance. The working principle of the grounding megometer is an AC bridge, so the output of the megometer is alternat...[Details]

Mixing console, as the name implies, is used to adjust the sound quality. When using the mixing console to process the sound quality, different recording engineers may have their own strengths and ...[Details]

On April 16, ABB, a manufacturer of power and automation technology, announced that it had signed a strategic investment and development agreement with fuel cell company AFC Energy to further promote...[Details]

0 Introduction Permanent magnet synchronous motors are widely used in pure electric vehicles due to their small size, light weight, and high efficiency. As the power source of pure electric ve...[Details]

      On the evening of March 7, Chen Jin, general manager of Lenovo Group's China mobile phone business unit, said that the competitor has finally confirmed the time for the press conference, congra...[Details]

Do you still remember the Meizu M8, the first smartphone released by Meizu in 2009? A blogger recently shared a video of the Meizu M8 booting up. The system animation and smoothness are impressive, a...[Details]

In the past few years, a class of materials called metal organic frameworks (MOFs) has attracted attention. This type of material has great potential for application in related energy fields, and res...[Details]

Introduction: To develop AVR microcontroller, we take AVR 8515 chip as an example to introduce its usage, hoping to be helpful to friends who are interested.  WinAVR configuration and makefile hav...[Details]

#include void delay10us(void){//error 0us     unsigned char a,b;     for(b=1;b 0;b--)         for(a=2;a 0;a--); } void iicStart(){ SDA = 1; delay10us(); SCL = 1; delay10us(); SDA = 0; delay...[Details]

Based on the QC/T 29106-2014 standard, this paper proposes new durability characteristics test and contact voltage drop test methods, and conducts experimental verification on these two test method...[Details]