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Recent content by Pretest

  1. P

    Substitute for cep83a3?

    Hi, First of all the replacement transistor you tried is not right to replace the first transistor. Second, if the transistor blew up again, you probably have something blown in previous stage. Good work
  2. P

    problem in avr c codes

    That is not correct the behavior you described is rotate not shift. For a right shift by 1 on a byte gives 0 and a left shift by 8 gives also 0 if the initial value is 1.
  3. P

    problem in avr c codes

    Both code listing are doing the same thing except for the delay(50) in the first listing.
  4. P

    PIC 18f14k50 running from input port power?

    Probably that the power goes back to the Vdd pin through the protection diodes. If you measure the voltage on Vdd, it should be (Vdd - Vdiode).
  5. P

    Stop counting consecutive interrupts that are generated without intention

    What is the purpose? Do you want to know how many time a switch has been pressed? If so a delay of around 100 to maybe 250ms may be enough.
  6. P

    laptop power supply current data question.

    Your specification is not given in watt but in Volt and Ampere. So doing the math of V x I is wrong if you want to know what is the maximum power. Refer to post #3.
  7. P

    laptop power supply current data question.

    To be able to calculate the input wattage of your PSU, you need to know your Power Factor, if you're using two multimeter to perform voltage and current measurement then your result will be in VA not Watt.
  8. P

    jk flip flop with preset and clear using simulink matlab

    In Matlab Libraries there is a library named Simulink Extras which contain flip flop of many styles.
  9. P

    fread,fwrite ubit MATLAB

    Check to see if your problem is not related to endianness type (little/big endian). This document from Matlab may help you : https://www.mathworks.com/help/techdoc/ref/fread.html
  10. P

    help me with debug errors

    You are right you need to define the z variable outside of the if. If you don't assign value when declaring a variable, you may see unexpected result.
  11. P

    help me with debug errors

    replace the #define with typedef and the * after position by ; In the function replace tPosition with Position. Also check for the width of the int type to make sure it bigger than 16 bit.
  12. P

    Triac applicatioon for phase selction

    If triac are used to control an inductive load Current and Voltage are out of phase, so even if voltage is 0V there will still be current flowing. Triac turn off is at 0 current not 0 voltage.
  13. P

    bit manipulation in mcu programming

    You could use C Struct Bitfields. Look this address: https://en.wikipedia.org/wiki/Bit_field
  14. P

    I need to send RTC data to Seven segment display

    Here something that could possibly do what you want. I give you pseudo code only. Read RTC and put the result in a variable. Select the right display by sending a 0 to your display. Isolate the value you want to send. Put it on PD0-PD4. Toggle high then low the STB pin of the Mux to latch the...
  15. P

    [SOLVED] How can I use output of a function ?

    It will be like your second code segment.

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