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Recent content by veerubiji

  1. V

    1:1 and fly-back transformers at low frequency and high temp specification

    Hi, I am designing a circuit in that i need 1:1 and fly-back transformers at low frequency(0-100khz) and high temperature . can anyone help me with these? I am looking for voltage being handled arround 12v, if possible at 175-200°C, with same voltage isolation. I need fly-back transformer to...
  2. V

    Low frequency voltage controlled oscillator design

    I am looking for square wave from, linear V/f characteristic and more temperature stability as well as accuracy is also important.
  3. V

    Low frequency voltage controlled oscillator design

    Hi all, I want to design low frequency voltage controlled oscillator. My frequency range should be arround 1 KHz to 500 KHz. Can anyone suggest which way is best to achieve this because i have seen many design circuits but all are little bit high in output frequency. Thanks.
  4. V

    Analog circuit design to measure pH value from sensor.

    Hi, I would like to design analog circuit that will detect signal from pH electrode senor and sent it to micro controller. I need analog circuit which process sensor electrode signal into ADC, from ADC to micro controller. I am thinking about Instrumentation amplifier to get low voltage dc...
  5. V

    Equivalent of XR2209 and INA116

    Hi, I am looking for equivalent voltage controlled oscillator of XR-2209. If possible at 200°C(high temp). I am looking for equivalent of INA116 at 200°C. Regards.
  6. V

    SM470R1B1M-HT programming.

    Hi everyone, I am trying to implement CAN communication on this microcontroller SM470R1B1M-HT(https://www.ti.com/lit/ds/symlink/sm470r1b1m-ht.pdf). I am new to can communication. I had gone through several CAN meterials as well as user guide for this controller which is...
  7. V

    Gain vs ADC performance vs ADC settling time

    Thanks for your explanation.....
  8. V

    Gain vs ADC performance vs ADC settling time

    Hi all, I have some basic doubts in ADC conversion. I am using AD7798 ADC. I am reading ADC values using AT90USB1287 micro controller using SPI communication. I am able to read ADC values perfectly but i have some doubts. I had gone through the datasheet several times. I am setting...
  9. V

    Microcontroller works or not after USB connection lost.

    Hi, I have small doubt about micro controller functioning. I am using at90usb1287 controller and i am communicating with PC using USB communication. Will microcontroller works after lost USB connection to PC. Will timers work after USB connection lost?
  10. V

    How to USB connection lost?

    How to know USB connection lost? Hi, I am programming AT90usb1287 controller via USB communication. The device is working perfectly and i am able to sent and receive data from PC. Is there any way that i can check USB connection is lost or not using programming? I am planning to stop one...
  11. V

    Programatic RESET is not working in atmega32a

    Is Watch Dog Timer enabled? I am trying to enable and reset the controller and disable WDT in the same command. Is it possible? I have looked into the fuse bits about watchdog enabled or not i didn't find anything about.
  12. V

    Programatic RESET is not working in atmega32a

    Hi, I am trying to reset atmega32a programmatically. It can be done with watchdog timer. In my case i am trying to reset the timer when i send some command from PC. I have written code like this for that function. case(RESET): #asm("CLI"); //Disable global...
  13. V

    PI controller algorithm for temperature.

    Hi, I am trying to implement PI control algorithm in c#. I found some help in internet and i understand the formula how to use. I have measured value(PV)= 20 °C and set point (SP)= 80°C; I would like to update every 2 sec in time. I found this code...
  14. V

    problem with demodulator design?

    Hi, i have attached all components connected to switch and as well as clear image of circuit than previous attachment. Circuit: https://obrazki.elektroda.pl/8551016100_1373365053.jpg
  15. V

    problem with demodulator design?

    I don't have any components arround switch I have only one switch "ADG1421BRMZ".
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