随笔分类 - Circuit
摘要：Adding Digital control to Dual tracking LM317 / LM337 Bench supplyI've been working on my own idea for a digitally controlled power supply over the la...
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摘要：i just finished this simple circuit and am very satisfied with the result. The output is very stable and extremely linear!just though id share as i di...
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摘要：how to generate an analog output from a in-built pwm of Atmega 32AVR microcontrloller?you need a resistor, a capacitor and an opamp.opamp is not reall...
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摘要：Voltage Translation for Analog to Digital Interface ADCHow to modify analog output range of Arduino DueArduinoDue does not have an analog output volta...
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摘要：PWM实现ADC和DAC一、PWM实现AD 利用普通单片机的2个IO及一个运算放大器即可实现AD转换电路，而且很容易扩展成多通道。其占用资源少，成本低，AD 转换精度可以达到8位甚至更高，因此具有一定的实用价值。1.1 硬件电路说明图一中“RA0”和“RA1”为单片机的两个I/O脚，分别将其设置为输...
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摘要：Reverse Voltage ProtectionI've long wanted to pull together some reverse polarity protection ideas in one place. Many are found individually on the we...
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摘要：LDO RegulatorHigh accuracy voltage regulatorVout = 2.5V * (1 + ( 5.6 / 6.8 ) ) = 4.55VRecently the author had to adapt a standard circuit configuratio...
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摘要：TVS二极管和稳压二极管的区别TVS管超过它的耐压值后，会瞬间导通短路，反应速度在ns级，而稳压管是稳压作用的，超过它的稳压值，只要功率不超过它的耐受值，就会稳定在它的稳压值范围内。TVS是瞬态抑制二极管，主要是用来抑制瞬时电压尖峰，减少尖峰电压对元器件的损耗。稳压二极管主要是稳压的作用。双向击穿二...
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摘要：基于运算放大器的线性稳压器基于运算放大器的线性稳压器为什么DIY？原因有二，第一是市面上的三端稳压器不满足要求，要么性能不好，要么功率不够。第二，市面上也有一枝独秀，性能优异的稳压器，不过它们价格不菲，譬如凌力尔特的LT1581,13美元/片，购买一堆元器件了。或者它们封装独特，不能和普通的三端IC...
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摘要：采用运放构成的串联稳压电源及可调恒流源电路图集成运算放大器具有开环增益高和输出阻抗低等特点，用它做稳压电源中的比较放大器是很理想的。图1-34所示，由稳压管VDw提供的12V基准电压通过电位器RP加到运放A1的同相输入端，稳压电源的输出电压Vsc又反馈到A1的反相输入端，当Vsc发生变化时，它与同相...
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摘要：一台数控恒流恒压电源的制作直流稳压电源是任何电子电路试验中不可缺少的基础仪器设备，基本在所有的跟电有关的实验室都可以见到。对于一个电子爱好者来说，直流稳压电源也是必不可少的。要得到一个电源，一般有两种方法：一是购买一台成品电源，这样最为省事：二是自己制作一台电源（因为你是电子爱好者），当然相比于第一...
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摘要：Driving proportional valves from microcontrollerI am looking to drive a current regulated proportional (solenoid) valve that needs up to 85mA @ 24V fr...
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摘要：LDO current regulator for power LEDChallengeYou've got a power LED? Great! Build a flash light!What does the spec say? "Voltage: 3.6 .. 3.8 V, power 3...
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摘要：High accuracy voltage regulatorGood morning everybody,I want to make a accurate voltage regulator based on the Basic Stamp.Total range 0-10 V and a re...
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摘要：An Isolated DAC Using PWM OutputArduino‘s (ATmega328P) PWM outputs viaanalogWritecan be conveniently turned into analog voltage levels through the use...
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