搜索结果

找到约 209 项符合 off 的查询结果

技术资料 基于STM8官方库控制BLDC应用说明

基于STM8官方库控制BLDC应用说明一、基于STM8官方库控制BLDC反电动势采样方法说明 1、 ST公司专利(PWM OFF 反电势采样)     采样原理:在PWM OFF期间  电机虚拟中点的电压为零,反电势电压可以直接AD采样,采样值和0.2V做比较;  优点:采样电路简单,只需要三个限流电阻,限制流入AD转换器的电流; 缺点:由于 ...
https://www.eeworm.com/dl/843135.html
下载: 4
查看: 1550

技术资料 PLC多种液体自动混合

采用的PLC是西门子S7-200系列,仿真编程软件为STEP7-Micro。在初始状态,容器是空的,各阀门皆关闭,Y1、Y2、Y3灯皆暗和M搅拌机均为OFF,液面传感器L1、L2、L3为关,加热器H为关。若要启动操作,按下启动按钮(I0.0),开始下列操作: (1)Y1、Y2为ON,液体A和B同时注入容器,当液面达到L2时,L2为ON,使Y1、Y2为OFF,Y ...
https://www.eeworm.com/dl/827568.html
下载: 2
查看: 5838

电源技术 利用高压看门狗定时器加强汽车安全系统

  Abstract: As electronic systems take over many of the mechanical functions in a car—ranging from engine timing to steering andbraking—there is a growing concern about fault tolerance. There should not be a single point of failure that would prevent a car fromat least "limping" ...
https://www.eeworm.com/dl/505/24368.html
下载: 56
查看: 1054

单片机开发 熟悉遥控接码解码的方法 //数码管显示解码结果:高四位为用户码

熟悉遥控接码解码的方法 //数码管显示解码结果:高四位为用户码,低2位为按键码 //硬件要求:拨码开关S10的第2位置ON,其他置OFF // 拨码开关S5、S6全部置ON // 其他拨码开关全部置OFF // 可读出任何6121或6122(CD6121/CD6122/SC6121/SC6122)及其兼容芯 ...
https://www.eeworm.com/dl/648/219041.html
下载: 130
查看: 1095

Linux/Unix编程 This GTK+ version 2.12.3. GTK+ is a multi-platform toolkit for creating graphical user interfaces.

This GTK+ version 2.12.3. GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off projects to complete application suites.
https://www.eeworm.com/dl/619/353751.html
下载: 188
查看: 1078

电源技术 按键开关控制器简化系统设计

  Handheld designers often grapple with ways to de-bounceand control the on/off pushbutton of portable devices.Traditional de-bounce designs use discrete logic, fl ipflops, resistors and capacitors. Other designs includean onboard microprocessor and discrete comparatorswhich continuously co ...
https://www.eeworm.com/dl/505/24326.html
下载: 109
查看: 1057

单片机开发 TIMER.ASM ********* [ milindhp@tifrvax.tifr.res.in ] Set Processor configuration word as = 000

TIMER.ASM ********* [ milindhp@tifrvax.tifr.res.in ] Set Processor configuration word as = 0000 0000 1010 b. a] -MCLR tied to VDD (internally). b] Code protection off. c] WDT disabled. d] Internal RC oscillator [4 MHZ].
https://www.eeworm.com/dl/648/156642.html
下载: 98
查看: 1062

单片机开发 富士通单片机MB902420系列The internal LCD-cotroller will be initialised (1/2 bias, 1/2 duty). The internal R

富士通单片机MB902420系列The internal LCD-cotroller will be initialised (1/2 bias, 1/2 duty). The internal Resistor devider is used. Some different methods are shown, how segments can be swicthed on/off.
https://www.eeworm.com/dl/648/289081.html
下载: 132
查看: 1102

技术资料 DDR4标准 JESD79_4

1. Scope ......................................................................................................................................................................... 12. DDR4 SDRAM Package Pinout and Addressing ............................................................................ ...
https://www.eeworm.com/dl/827937.html
下载: 35
查看: 854

技术资料 基于STM8官方库应用说明

、基于STM8 官方库控制BLDC 反电动势采样方法 采样原理:在PWM OFF 期间 电机虚拟中点的电压为零,反电势电压可以直接AD 采 样,采样值和0.2V 做比较; 优点:采样电路简单,只需要三个限流电阻,限制流入AD 转换器的电流; 缺点:由于这种方法需要一定的PWM OFF 时间,所以在有些需要PWM 占空比为100% 的应用中,无法使用此 ...
https://www.eeworm.com/dl/862351.html
下载: 2
查看: 7503