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Recent content by peeyushsigma

  1. peeyushsigma

    list of all IRQ interrupts for efr32

    Hi Yefj, You can refer to the device header file for the MCU, there you can see all the exceptions and interrupts listed for example https://siliconlabs.github.io/Gecko_SDK_Doc/efm32g/html/efm32g890f128_8h_source.html...
  2. peeyushsigma

    [SOLVED] How to use NTC temperature sensor in production

    Why do you think I will not answer that..can you please clarify..why one should not take advantage of this forum ?? I have been using this forum for the last 8 years and everyone helps as per his/her capability and knowledge. - - - Updated - - - I want to measure cold storage temperature and...
  3. peeyushsigma

    [SOLVED] How to use NTC temperature sensor in production

    yes it meets my requirement but we have to invest effort in making sensor housing (enclosure)..
  4. peeyushsigma

    [SOLVED] How to use NTC temperature sensor in production

    Can you please suggest any band gap device for the same purpose..I just want avoid calibrating all the sensor in production.
  5. peeyushsigma

    [SOLVED] How to use NTC temperature sensor in production

    @KlausST https://en.tdk.eu/inf/50/db/ntc/NTC_Probe_ass_M2020.pdf is the NTC thermistor I want to use. My question is if I use good tolerance analog components, should I be able to achieve the 0.5 deg C accuracy over (-40 to +40 deg C) range, without doing any calibration? - - - Updated - -...
  6. peeyushsigma

    [SOLVED] How to use NTC temperature sensor in production

    Hi There, I want to use NTC temperature sensor in one of my product with MCU having 12 bit ADC..any idea how to take this into production, How we will maintain its calibration and will every sensor will require calibration if we want to achieve accuracy of -+0.5 deg C across -40 to + 40 Deg C.
  7. peeyushsigma

    [PIC] Modbus RTU code for PIC16F886

    you can create your own port for PIC MCU here https://www.freemodbus.org/index.php?idx=1
  8. peeyushsigma

    [SOLVED] Using LED driver IC to Drive Proportional Solenoid Valve

    Yes I understand your point ..But this is proportional control valve and it is normally closed. If I can get the normally open valve then I have to close it till the flow reaches its set point.
  9. peeyushsigma

    [SOLVED] Using LED driver IC to Drive Proportional Solenoid Valve

    If you see the data sheet of the solenoid the coil assembly is on the top of the flow opening and also the flow rate is below 15 LPM . so it is not dissipating the heat properly unless I provide a separate cooling fan.
  10. peeyushsigma

    [SOLVED] Using LED driver IC to Drive Proportional Solenoid Valve

    Yes jiripolivka data sheet of the solenoid says ..opening of the valve is proportional to current flowing through it. I will test the circuit tomorrow and let you know how it goes.. thank you for reply. - - - Updated - - - you are right .. my concern is heating of the coil.
  11. peeyushsigma

    [SOLVED] Using LED driver IC to Drive Proportional Solenoid Valve

    Hello everyone, I am using PWM to control a proportional solenoid valve(12 V,340mA) to control air flow rate. The control system is working but the coil of the solenoid is getting very hot. I want to reduce the heat generated in the coil. After searching on the internet. I found that If I use...
  12. peeyushsigma

    [SOLVED] NPN Transistor biasing question

    Thanks ArticCynda Got it ...
  13. peeyushsigma

    [SOLVED] NPN Transistor biasing question

    hi folks, In the attached transistor circuit i want to calculate VCE .. my analysis " transistor BE junction will be reverse biased and VCE=5v ". but answer says "Valid Answer range between: 4.26 and 4.27 ".
  14. peeyushsigma

    BJT Biasing Formulas

    you can not apply these formulas blindly ...here is some points to remember... 1. firstly suppose transistor is in active region and find out the base current. 2. apply Ic =βIb. 3. find Icsat= (Vcc-0.2)/Rc. 4. If Ic< Icsat. then Transistor is in active region otherwise if Ic>=Icsat then it is...
  15. peeyushsigma

    regarding inaccurate data of GPS

    Hi Arun this is very common in GPS receivers...when you start your receiver very first time they require some special information called Almanac and Ephemeris .. this might cause inaccurate information. To get accurate information keep your GPS receiver ON till the Almanac and Ephemeris...

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