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  1. S

    How to select amplifier?

    * supply voltage +5V * supply current 1 ampere * noise These info about supply or from my sensor output? * offset ... and drift * frequency ....
  2. S

    How to select amplifier?

    At all, I have a doubt, How to select amplifier for my application.. 1. sensor output is in mV, that one i want to use with 25 gain output.. calculation and all i am ok. 2. Single supply(+VCC and GND) or dual supply(+VCC and -VCC), Which one is better.. 3. Operational amplifier or...
  3. S

    FFT reading for 10Hz - 200Hz with frequency resolution of 0.5Hz.

    as off my required frequency is 10-200Hz, But the input for adc have frequency of inbetween 2Khz-5Khz because of noise, Is there any way to control it via software or i have to go for hardware filter for attenuation of higher frequency signal?
  4. S

    FFT reading for 10Hz - 200Hz with frequency resolution of 0.5Hz.

    What resolution / bit count. I am reading battery voltage, and my ADC is with 12bit resolution. What interface: Built in ADC, i am using built in functions like read adc(); and all.. There is a way of measuring frequency with much bigger hardware with multiple filters. but its...
  5. S

    FFT reading for 10Hz - 200Hz with frequency resolution of 0.5Hz.

    Thanks for the information KlausSt, Edited by Dora: from now on, could you put quotation marks when you quote somebody? I am familiar with PIC18F series controllers. Every 1 Second i want to calculate frequency, From the output of FFT, I want to measure RPM of an engine with battery...
  6. S

    FFT reading for 10Hz - 200Hz with frequency resolution of 0.5Hz.

    Want to measure frequency with FFT, Frequency range = 10Hz - 200Hz. Frequency resolution = 0.5Hz Which controller suits for this, and which FFT algorithm will give better results. I am new to this FFT concept. suggest your best...
  7. S

    Array initialization with PIC18F47k40

    Yes as you said like that i initialized, but for debugging purpose i kept that into while loop. - - - Updated - - - @ FenTrac Then what can be done? is there any alternative for compiler or MCU only we have to change?
  8. S

    Array initialization with PIC18F47k40

    I am facing this array initialization issue with PIC18F47k40. When i am initializing array with assigning values like unsigned int array[] = {0,1,10,100,1000}; //All the values of array elements taking 0x0000 I saw with debug in watch and variable window. If i assign like unsigned int array[0] =...
  9. S

    [SOLVED] AD420 DAC digital input range?

    Hi all, I want to know the input digital value range of AD420, I need output of 4-20mA, I configured according to the requirement, AD420 is a 16(0-65535)bit DAC, but my adc values are 10(1023)bit, How to make my ADC values to compatible with AD420.. Thanks...
  10. S

    What is MTTF(Mean Time to Failure) in laser diodes?

    What is the meaning of MTTF(Mean Time To Failure)?
  11. S

    Why the 7805 regulators are called as linear?

    Dear chuckey i got what you said, But i need some more info about linear can you teach why its linear? why because linearity means a difference between successive elements will be constant, or something like a straight line, based on what its called as linear? - - - Updated - - - Dear chuckey...
  12. S

    Why the 7805 regulators are called as linear?

    Why the 7805 is called as linear regulator and what are the difference between the switching and linear regulators...
  13. S

    [SOLVED] Relays in Parallel to a single power supply?

    I am driving relays of 12V and switching current they given as 1mA to 1.25A, and power supply is of 12v 2 amps.. - - - Updated - - - That recovery diodes i kept but how about the power supply? is that ok 2amps power supply?
  14. S

    [SOLVED] Relays in Parallel to a single power supply?

    Is there any Problems if we connect two Relays for a same Power supply(Parallel) and switching on at a same time? Best Regards...
  15. S

    Is that possible to work MAX232 for 2 different voltages?

    I mean to say that, I wanted to use transmission with 3.3V and my reception is with 5V can i use a 3.3v transmission for that receiver using MAX232?

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