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Recent content by Arash_R

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    Detect full-wave and half-wave with AVR

    thank you , let me explain : There is a input signal, this signal is Full-wave or half-wave (we don't know which one) , now i want to detect it, using an AVR Microcontroller . yes, i have used a Capacitor to keep signal peak amplitude and i can measure it , but the problem is...
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    Detect full-wave and half-wave with AVR

    Hello , Is is possible to use AVR to detect Whether a wave is Full-wave or half-wave ? my purpose is to rectify an AC Voltage . I have put a single diode for making Half-wave and have put a diode bridge for making Full-wave . i have used an Opamp to Convert waves into a Square wave Signals (i...
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    LCD Whistles while Vee is not connected

    LCD Whistles while Vee is not connected or is GND Hello , i am using a graphic lcd (AGM1264F) in my Board , but something strange happens when i disconnect Vee Pin or when i connect this pin to GND , LCD Starts Whistling and plays strange noise :lol: 8-O :-?!! i wanted to know if someone has...
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    Confused about comparator

    i suggest you do not memorize equations . i think it is better to keep Op-Amp rules in mind and write equations from first . in this circuit you know V(+) = V(-) and i(+)=i(-)=0 . Write KCL equation for node (of resistors) and you will find correct Amplified equation . look at following links ...
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    PLC Or FPGA? What to choose as a Career?

    I think they are two different subjects and cannot be compared and I think you can get involve in both of them .
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    Make Something with an Old CPU

    thank you for your reply and ideas . yes it is with an old motherboard. I post a picture of CPU : if picture has bad quality CPU ID-numbers are : Intel DX4 iComp index =435 A80486DX4100 L6113101 &EW 3volt SK096 INTEL (M) (C) '89'94 I have searched the web for This CPU's datasheet but found...
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    Make Something with an Old CPU

    Hello I have an old intel CPU , and I am very interested in creating an electronic device with it . is it possible or not ? Please Share your ideas , what would you make with an old CPU ? it doesn't matter if it is hard to make or not .
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