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Recent content by fareen

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    What is hole in semiconductor ?

    hole does not exist as independent quantity, its just when a atom losses its valance electron brings a + charge on the atom, that is normally called hole. but the electron is nearby and combine with the atom when the attraction on electron ends. thats why permanent ions does not form.
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    How can I construct my own Fm circuit

    https://www.electro-tech-online.com/blogs/fvm/238-fm-stereo-encoder.html
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    MOSFET H-Bridge using IRF3205

    your output voltage is 7v because the mosfets are not properly switching, they require almost 12v pulses at the base, u must properly saturate the base mosfet check the voltage from the ir2110, amplify the voltage if you need to and they are getting heating because the mosfet in a single leg are...
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    [SOLVED] replacement of a modulator in FM encoder

    hey **broken link removed** this is the circuit o FM encoder, i have simulated this circuit on proteus, got the required results. but doing on hardware cause problem. the modulator is not producing the required output. the FFT of the signal before the bandpass filter shows lots of harmonics as...
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    Is there any microcontroller having built in I2c function

    why not use PIC18f series thay have I2C modules present in them and u cann easily program them in C, using company provided softawre MPLAB
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    Generatin square waveform using ttl

    use 555 timer that can do that
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    pic18f2431.....error in displaying data on the port

    i found the problem PWMCON0=0x00, need to be declared, as the ports are multiplexed.
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    Cannot set PortB of PIC18LF1220 to input

    set the PWMcon0 register to zero or any other register related to portb
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    pic18f2431.....error in displaying data on the port

    using debugger. how exactly...not using any of those modules and according to datasheet thses pin has default function of I\O port TRISB define the port as out put port
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    pic18f2431.....error in displaying data on the port

    im using simulator to see the output on watch window using MPlab with XC8 compiler - - - Updated - - - meaning????
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    pic18f2431.....error in displaying data on the port

    # include <xc.h> void main (void) { TRISB=0; while(1) { LATB=0xFF; LATB=0x00; } } the above code dosent show 0xff on portb instead show 0xc8.. any idea why??
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    How to find Rs and Cs for 2nd order RC circuit

    Re: 2nd Order RC Circuit for a specific frequency u can randomly pick the value of resistor and capacitor only thing matter the confriguraion you chose the decay rate depends upon the value of Q... consult this book filter design by m.e van valkenburg
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    What is the exact use of Eber's Moll Model?

    well its not use in any practical calculation ...u have quite correctly understood the use.i.e. in proving equations

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