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Recent content by roy mathew

  1. R

    Measure -Vol with ADC

    Hi can you give some partnumber for bipolar adc's thanks
  2. R

    Viru and embedded development softwares

    Hi All, Any body ever experienced mal function of an assembler or compiler on a virus infected system, such that an assembler or compiler creates an out put file which contains error. Thanks t o all.
  3. R

    digital input for pic16f877 on PORT A

    port 16f877 a-e Hi, I think you should try by keeping lvp off if you are note using it . according to your code off time for yor led is only two or three instruction cycles at 4mhz it amounts to 3 micro seconds. I gus you need atleast 250milliseconds on off time to see a...
  4. R

    Suggest me a microcontroller for a portable oscilloscope with graphical LCD

    HI, to every body I am dreaming of making a portable oscilloscope with graphical lcd and a micro controller not yet decided wich micro controller. can any one suggest for a 40mhz 12 bit resalution which controller should i use and at what speed. thanks
  5. R

    How to measure the frequency of the sine wave using micro?

    Frequency measurement Hi I think a peak detection rotine canbe done after every sample and could be counted, a timer interrupt after every second could be used to transfer counter value to frequency register and clear it ..
  6. R

    problem in compiling code for PIC 16F877

    Hi List, incl, _config directives are not found
  7. R

    electric shock felt by homan body

    Hi, Earth leakage circuit breakers are available. ELCB
  8. R

    two Regulator in parallel ??? help needed

    Hi Why don't use switching regulator instead?
  9. R

    Looking for Spice model of LF398

    lf398 pspice Hi any body could provide help with LF398 spice model? plsss
  10. R

    Looking for Spice model of LF398

    lf398 para multisim Hi I tried this model with orcad schematic I get error message not a library file, can you explain how to use this.
  11. R

    Pic 16f877a stepper driver

    data sheet 16f877+stepper motor Hi, I think ccp module in 16f877 could be configured to generate controll pulses requered for stepper motor driver but we only have two ccp modules in 16f877. any body have other idea pls share
  12. R

    two Regulator in parallel ??? help needed

    Hi I feel conecting two regulators parellelly is not good idea for the long term truble free operation of a circuit, even a dry solder could result in blowing up both devices.
  13. R

    Suggest me a peak voltage monitor IC

    Peak detection Hi Thanks alot IanP It reduces compnent count significantly.
  14. R

    Looking for Spice model of LF398

    lf398 multisim Hi Thanks A lot could I use this in multisim EWB .
  15. R

    pic 16f877 program memory corrupted

    HI, Thanks a lot for inputs provided by avery body. VSMVDD mentioned here about power suplly voltage. Iam using 78lso5 itself, is there any problem if supply drops below 5v down to 4.6v. What about all this instability talk does that means pic is not suitable to use ina rugged industrial...

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