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Type: Posts; User: yogece

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  1. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    Thank you so much Indeed for sharing your experience with Semikron SKYPER 32R.This gives confidence about the capability of the gate driver.

    This is what i expect from the community; some one...
  2. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    1.I couldn’t find many application references for IGBTs but many resources are available for MOSFETs DC and linear Mode operation , which works in the duty cycle close to 100%.

    2. Need some...
  3. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    The issue is not about the gate driver.Anyway i accept your suggestions.
    Regarding the 100% duty cycle operation of IGBT i have asked the manufacturer for some application note/guide lines for using...
  4. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    I don't have problem with the gate driver i have Semikron SKYPER 32R
  5. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    Hi thanks for the reply!!

    If possible can you provide the link for the applications which mentions about the continuous operation in the duty cycle of 95% or above
  6. Closed: Re: Is it possible to make an IGBT to work at duty cycles up to 100%?

    Hi thanks for the reply!!

    Here the source and load is okay. But selection of IGBT for close to 100% duty cycle operation seems not possible.
    Can you point me some resources?
  7. Closed: Is it possible to make an IGBT to work at duty cycles up to 100%?

    I am designing an IGBT based chopper with single Low side switching IGBT (chosen low side switching because ease of driving the IGBT.)

    There are plenty of resources available for SMPS (buck,...
  8. [SOLVED]Closed: Re: LM741 Amplifier not working with IR2110 IC [PROTUES]

    Hi,
    what is the maximum duty cycle of the drive signal from arduino?
    first you have to turn on the low side MOSFET in order allow the bootstrap capacitor to charge and then only it will work...
  9. Closed: Re: Getting started with SMPS design -Transformer selection

    Hi,
    Thanks for your Suggestion!!
    I have referred many app notes for the same but i couldn't get the transformer with the specifications given by them from the local manufacturer.It might be...
  10. Closed: Getting started with SMPS design -Transformer selection

    Hi,

    I would like to get started with SMPS design there are lots of application notes with test report available for designing it.

    The manufacturer of the Transformer has given only the Core...
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    Closed: Re: DIY thickness measurement sensor

    Thanks FvM.
    can i get micrometer accuracy in eddy current method?any article relevant to this?
  12. Replies
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    1,242

    Closed: DIY thickness measurement sensor

    I would like to measure the thickness of a metal sheet in mm accuracy using a non contact sensor.can anybody show me the path?
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    Closed: Re: mosfet driver dc motor controller with pwm

    Its a low side drive because Source terminal of the MOSFET is directly connected to ground.
    you can use the attached circuit diagram it would work for you

    102706
  14. Replies
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    Closed: Re: mosfet driver dc motor controller with pwm

    what about the supply voltage to the motor?
    if you opt low side driving you can use discrete MOSFET driver using BC547(NPN),BC557(PNP) with few resistors;high side driving requires a driver IC such...
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    Closed: Re: RS232 communication using Pc817 optocupler

    do connect the circuit with the PCs serial port and open any terminal software like hyperterminal or putty ,then type some thing the same should be received and displayed on the terminal software.set...
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    Closed: Re: Help Needed in the Motor selection process

    do you want to move the shaft to and fro ?
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    Closed: Re: Extremely low power 30 seconds delay

    look at http://touchstonesemi.com/products/ts3005

    Touchstone semiconductors TS3005 timer operates at extremely low current and it requires a single resistor to program the delay
  18. Replies
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    Closed: Re: mosfet driver dc motor controller with pwm

    1.What MOSFET you are using?
    2.Are you using H-Bridge to drive motor?
    3.Where you have connected your load(DC motor) i.e high side or low side driving?
    4.What is the load current requirement?
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    Closed: Re: switching four devices using a PRESET

    There may be some logic missed on your code.If you can share your code anybody could help.
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    Closed: Re: op amp and photo diode

    you can even use an LED as a photo detector.just look here http://www.edn.com/design/analog/4327225/Red-LEDs-function-as-light-sensors
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    Closed: Re: I need help to develop a power supply

    i have seen your circuit diagram.but where is the regulator even if you put a regulator for +12V it work. but -12V wont be able supply much current because it uses capacitors(less efficient and poor...
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    Closed: Re: low power trigerring circuit!

    do you need Latching type circuit.just brief your requiremnt
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    Closed: H-bridge using P&N channel MOSFETs

    Hi all,
    i would like to design a transformer less inverter and have 12V-315V DC-DC converter board can i design h-bridge(N&P channel MOSFET) without driver IC like(IR2110)
  24. Closed: Re: how to make digital or electronic relay using transistors

    you can use L293D bidirectional DC motor driver even you can control the speed of the motor by giving the PWM signal to the ENABLE PIN of L293d(pin1)80808
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    Closed: Re: how to design two wire system?

    What do you mean by "two wire system" can you brief your problem so that you can get help from the members.
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