简单的直流电机PWM调速电路 Simple DC motor PWM speed controlThe 555 is ubiquitous and can be used as simple PWM speed controlCircuit Explaination: The 555 Ic is wired as an astable and the frequency i
简单的LED电源项目电路 A power source for simple LED projectsLED's are great display tools. Their prices have decreased to a point where they are replacing more conventional light sources. In one sense
有人把CPU比作电脑的“心脏”,实际上,如果我们真正形象地去比较,CPU对于电脑来说更像是大脑的作用,而真正为电脑提供动力的心脏应该是为电脑提供充足电力的电源。那么让我们来关注一下这个被我们忽视的角落。
引言 JTAG(联合测试行动小组)是一种国际标准测试协议(IEEE 1149.1兼容),目前主要用于芯片内部测试。现在多数的高级器件都支持JTAG协议,如DSP、FPGA器件等。标准的JTAG接口是4线:TMS(模式选择)、TCK(时钟)、
作为一种新的、最有潜力的光源,LED照明以其节能、环保的优势越来越受到人们重视。加上国家和地方政府的政策鼓励,我国的LED照明产业进入了加速发展阶段,运用市场迅速增长。在室内照明方面,用LED灯替代传统的可调光
三自由度直升机可以应用于飞行器控制系统的半实物仿真试验和性能测试等场合,用以模拟横列式直升机,即倾转旋翼机的直升机状态[1]。其控制系统属于典型的多输入-多输出系统,具有非线性和强交叉耦合性,不易用传递函
进线电源过压及欠压对开关电源造成的危害,主要表现在器件因承受的电压及电流应力超出正常使用的范围而损坏,同时因电气性能指标被破坏而不能满足要求。因此对输入电源的上限和下限要有所限制,为此采用过压、欠压保
Knightrider lights for model carsThis simple circuit drives 6 LEDs in 'Knightrider scanner mode'. Power consumption depends mainly on the type of LEDs used if you use a 7555 (555 CMOS version).Here's
脉宽调制直流电动机控制电路 Pulse Width Modulation DC Motor ControlOften, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter a
红外遥控器干扰电路 IR Remote Control JammerBy Carl Don't like your little brother's TV channel selection? Hate the volume your wife sets the stereo at? Want to just annoy someone? This circuit does
红外线远程控制电路 Infa-Red Remote ControlI have received a number of emails requesting schematics for infa-red remotes. So here is one. This remote transmits a tone using an infa-red LED. This tone i
步进电机控制器电路 Stepper Motor ControllerI found this circuit in my files. I don't know where it came from, but it looks like I photocopied it from somewhere years ago. I have been told that it came
可控硅调光灯电路-TRIAC Light Dimmer This little circuit can be used to dim lights up to about 350 watts. It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat. Pl
我国新的《道路交通法》中,为维护道路交通安全,也明文规定了对驾驶速度、连续驾驶时间等。国外一些交通运输发达国家也制定这方面的国家统一法规。疲劳驾驶是公路汽车驾驶特别是高速公路上的“隐形杀手”,据相关统
通常音频电路中包括滤波、耦合、旁路、分频等电容,如何在电路中更有效地选择使用 各种不同类型的电容器对音响音质的改善具有较大的影响。 1.滤波电容 整流后由于滤波用的电容器容量较大,故必须使用电解电容。滤