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Type: Posts; User: dhiraj.mahajan

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  1. Closed: Re: controller not wark proper in power on

    but i have used controller internal RTC U6 IC not mount only provision
  2. Closed: Re: controller not wark proper in power on

    hello all;
    Decoupling capacitor of controller used 100nF but in controller datasheet 1uf and 10nF this capacitor required analog VDD Supply


    Thank you
  3. Closed: Re: controller not wark proper in power on

    Power no reset problem in PCB
  4. Closed: Re: controller not wark proper in power on

    Hello;
    I am sum experiment NRST Circuit not proper work, But change value R33 1K to 2M Resistor and Capacitor 1nF to 1uF issue not solve
    Any one sages me what was do
  5. Closed: Re: controller not wark proper in power on

    Every Power ON Bi color LED is Blink but in this 30 QTY PCB alternate time wark

    - - - Updated - - -

    Every Power ON Bi color LED is Blink but in this 30 QTY PCB alternate time wark.
    continuous...
  6. Closed: controller not wark proper in power on

    Hello All;
    I have Ned help in given Schematic control program properly every time but in power on controller not wark, every alternet time wark power on,
    What his problem.
    I am assemble 35 Qty...
  7. Closed: ir pair not wark behind black acralic

    hello;

    i have used ir pair to we-cup controller in infant obstacle is detect but enclosure has black acrylic the IR is not wark what is problem

    154788
  8. Closed: ned help for GPIO Expandera sum time duration not wark properly

    hello;
    i have used GPIO Expandera to switch mosfet and maser output but in sum time duration expandera ic not work properly, this expander ic communication to main controller using SPI communication...
  9. Closed: Re: SPI communication in proper with 230VAC is connected in PCB

    hi,
    in semantic pin mapping not update , in routing connection is correct

    Problem is solve be cos snub-er circuit is not present across pole and NC in Relay
    Thank you
    Klaus
  10. Closed: SPI communication in proper with 230VAC is connected in PCB

    hello;
    Need help in SPI communication CPU bord to External LDM borde to switch 230VAC for Relay but 230VAC connect external board to not switch rely but without 230VAC connection work properly what...
  11. Closed: Re: SMPS 230VAC to 12VDC Testing Using TOP271 ic but this is switching problem

    Hello
    P6KE150A this Diode is heated by 12V applying Load 2Amp
    What is The Problem
  12. Closed: Re: SMPS 230VAC to 12VDC Testing Using TOP271 ic but this is switching problem

    hii
    P6KE150A is faulty, Chang diode and SMPS is working Properly


    Thank you Klaus and BradtheRad
  13. Closed: Re: SMPS 230VAC to 12VDC Testing Using TOP271 ic but this is switching problem

    hii
    SMPS is Not on properly ..cantinus switching top271 ic sum sound will generated all Shutdown condition is desebal
  14. Closed: SMPS 230VAC to 12VDC Testing Using TOP271 ic but this is switching problem

    hii
    I am testing 230VAC to 12VDC smps but top271 ic is continuously switching 1.6 sec time . over voltage ,over current and under voltage is disable
    pleas help me what is problem in design
  15. Closed: Re: I have required low power isolated DC to DC converter schematic

    hii
    I have required Fly-back DC to DC isolated 12 V input and two 12 V output 100mA
  16. Closed: Re: I have required low power isolated DC to DC converter schematic

    hii

    pri sek isolation voltage
    sek sek isolation voltage

    any

    - - - Updated - - -

    regulated output also
  17. Closed: I have required low power isolated DC to DC converter schematic

    hii
    I need design a Power supply with these characteristics:
    - ISOLATED DC/DC
    Vin: 12 Vdc
    Two isollated output
    - Vout1: 12Vdc
    - Iout1: 100mA
    - Vout2: 12Vdc
    - Iout1: 100mA
    Can somebody...
  18. Closed: Re: TPS54331 oversupply output no load voltage is not proper

    hii
    But i have required to vary input voltage 4.5V to 6V and output is 3.3V Constant on no lode ..then 6V is same but input voltage will be vary 5V then output voltage is given below waveform146084
  19. Closed: Re: TPS54331 oversupply output no load voltage is not proper

    hii
    FAF of Schematic
  20. Closed: Re: TPS54331 oversupply output no load voltage is not proper

    hii Klaus
    in voltage 5V and lode resistor is 330E then output waveform is given and L1 and c1 is remove -
  21. Closed: Re: TPS54331 oversupply output no load voltage is not proper

    but I have 10mA lode then this is also same behavior ...but in datasheet is given lees than 1uA then this gon in shutdown mode
  22. Closed: TPS54331 oversupply output no load voltage is not proper

    hii
    i am using tps54331 regulate is input is 4.5 to 6V and i have required 3.3v constant to vary input voltage 4.5v to 6V or 6V but in no load not proper 3.3V is generate ...above given waveform for...
  23. Replies
    4
    Views
    743

    Closed: Re: transistor operation

    hii
    1/10 ratios apply 1000000/100000=10 this is right but in EN_WAKEUP signal digital scope is connected then this is wark properly ... prob is remove then this is not work proper


    thank you
  24. Replies
    4
    Views
    743

    Closed: transistor operation

    hii

    above given circuit Transistor Q5 is not on properly for base will be drive in controller , given is vcc=3V
    any can sage me why this is not operated properly
  25. Replies
    8
    Views
    1,015

    Closed: Re: Optocoupler response time measurement

    hii
    but in scematic IR sensor output is given to sens output ic pin no. 3
    and 33K R3 is assume for orating graph of Ic VS If
    i have required Minimum current If=2mA will be drive then...
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