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Type: Posts; User: maxim10373

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  1. Closed: Re: SMPS Switching transistor getting too hot

    Sorry,I don't have a full schematic
  2. Closed: SMPS Switching transistor getting too hot

    hi
    I am trying to repair a SF-PW yamabishi make CNC sprintle control power supply.
    Now the smps on but,switching transistor C3150 getting too hot.The older transistor was C3148.
    I put C3150...
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    [SOLVED]Closed: Simple LED Blinking Program 8051

    Hi friends
    Attached here with a program file 8051 based.
    According to this program, all LED s are direct on when the power switched on.
    and off when the button press one by one
    I need to change...
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    716

    Closed: Re: Li-ion Battery charger need help

    Thanks for reply.
    i have attached the datasheet here.

    regards
    maxim
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    716

    Closed: Li-ion Battery charger need help

    A Lithium iron Phosphate battery voltage is 3.2v and capacity is 5000mAh.
    what is the charging current if I make a charger for single cell ?
    Data sheet said that 1C rating.
    if 1C =5 amp for one...
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    Closed: NI-MH Battery charger circuit help

    Friends
    I need a charger circuit for 12x 1.2volt,2100Mah NI-MH Batteries .(14.4V)
    here what will the out put voltage and current for charging this 12 batteries ?
    which switching transformer for...
  7. Closed: An1660 low-cost induction motor controller

    Hi Guys,
    Anyone have tried to AN1660 Induction motor speed controller?
    Please share your experience here. Which is the complete source code (.Hex) in this attached file ?

    Maxim
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    466

    Closed: Motorola microcontroller program

    Dear all
    MC68331CFC16 is programmable ? any program inside of this chip ?
  9. Replies
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    589

    [SOLVED]Closed: Simple led on off circuit 8051

    Friends
    This is a simple LED on off with a push button program. can you help me to add ; when push the button more than twenty (20) seconds
    The LED should be OFF.

    regards
    AJAY


    ...
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    Closed: Glossy papper for sensing application

    Dear,
    I have attached an image of a pepper type reflector for sensing applications.
    Can you tell which type of material is this and which type of sensor sutable for
    This reflector . If possible...
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    Closed: Siemens SITOP 20 switch mode powersupply

    Hi friends
    I am try to repair this SMPS Siemens SITOP 20 .
    When I switch on the powersupply Power transistor getting blast.
    I changed all capacitors and faulty componants on control board
    The...
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    Closed: Current Transformer Identification

    hi All

    According to this diagram, what is the rating of the current transformer ?
    This is a 1HP 3phase induction motor starter with over current protection circuit.


    thanks
    Maxim
  13. Closed: Re: microcontroller based inverter (drivers, mosfets, transformers, losses, efficienc

    https://www.edaboard.com/thread339604.html

    please check above article.

    - - - Updated - - -

    This document may help you.
  14. Closed: Re: Temperature controller PIC16f877 need some modify

    If possible I can use S2 Increase,S3 decrease and S4 set

    - - - Updated - - -

    yes.I will wait till tomorrow.

    Thank you very much sir
  15. Closed: Re: Temperature controller PIC16f877 need some modify

    http://electronicsforu.com/electronics-projects/hardware-diy/pic-digital-temperature-controller
  16. Closed: Re: Temperature controller PIC16f877 need some modify

    Set any minimum and maximum temperature with the help of LCD display, by pressing switches S2 and S3. The maximum temperature will start from minimum temperature +10 degrees. If the temperature being...
  17. Closed: Re: Temperature controller PIC16f877 need some modify

    Sir
    This project is working well. But need some changes according to my application.
    In this circuit Heating element Off and On similarly when the temperature greater than set temperature and ...
  18. Closed: Temperature controller PIC16f877 need some modify

    Dear ..
    I attached here with the c-file and circuit and the working principle is given below;
    Set any minimum and maximum temperature with the help of LCD display, by pressing switches S2 and S3....
  19. Closed: Re: Microcontroller based speed control of ac motor

    This is the Attachment he told about
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    Closed: Triac based AC motor speed controller

    Hi friends
    According to this diagram speed reducing zero to maximum.
    but voltage fluctuating (flickering if connect a BULB)on output.
    is this method possible to drive a triac ?


    regards
    maxim
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    Closed: Piezo Electric crystal cirrcuit

    Hi Dear
    A Piezo electric crystal generate very little current (or voltage).
    How to amplify this logic signal ,for work a 6volt relay circuit.


    regards
    Ajitkumar
  22. [SOLVED]Closed: PIC18F452 three phase inducion motor controller out put fluctuation

    Hi All
    I have completed AN843 based 3phase motor controller and its working forward direction
    is perfect, but when the reverse function, output fluctuating and fault light also blinking.
    when I...
  23. Closed: Re: Can anyone help with finding this vintage capacitor?

    http://www.taydaelectronics.com/0-22uf-100v-5-polyester-film-box-type-capacitor.html

    Check this article
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    Closed: Re: generating 20khz pwm from sg3525

    http://microcontrollerslab.com/sg3525-pulse-width-modulation-controller-ic/

    This article may help you
  25. [SOLVED]Closed: Re: Using pic micro controller with g540 programmer

    hello
    thanks for All
    I was used 20Mhz Oscillator instead of Crystal.
    studied about the difference of Oscillator and crystal problem solved.
    I need one help for, I need to star the circuit with a...
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