• amplify voltage
    hi i m using 89c51 , the output voltage of port1 is approx 5 volt, but i need 12 voltage as my requirement, i used simple NPN transistor, but the output is approx same with base voltage, actually...
  • Public address amplifier simulater
    Hello !!! I try to make an public address amplifier simulater for test befour blowing. I must simulate the output of the amplifier who is generally fed to a transformer that has a secondary winding...
  • 24V to 5V dc to dc converter
    Hi! Can the Cx51 have 24V to 5V DC to DC converter or related document.If better then quick give me some idea that how can I convert 24v dc into 5v dc with the help of PWM. If you have any schematic...
  • Boosting the volume of a audio signal
    Sorry for asking a non-keil related question. I have a microcontroller that generates some noise by a PWM signal / speaker. I use three NPN transistors as audio boosters. My power source is momentarily...
  • Boost lib Support
    hello,everybody I am writing my code using c++ in keil project, and know that boost lib is powerful. so I want to add boost lib to my project. is it possible? if you have any idea, please tell me....