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Type: Posts; User: adnan012

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  1. Replies
    6
    Views
    498

    Closed: Re: Feedback less PushPull Converter

    Thanks for reply.

    Can i say that at zero load the Pulse width will be at its minimum value and at different loads PWM will not remain same and it will change. Or PWM will remain same in any case?...
  2. Replies
    6
    Views
    498

    Closed: Feedback less PushPull Converter

    hi,

    Is it possible to run a push-pull converter without any voltage feedback? With only current sense resistor at the primary side, can we get voltage regulation?

    Regards
  3. Replies
    3
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    638

    Closed: I/Q baseband Modulator Demodulator

    hi,

    I want to understand I/Q modulation and demodulation process. I want to module a 10MHz bit stream (each bit has 100 nsec duration). Bit stream is in the form of 0 and 1. I want to perform...
  4. Closed: Re: Push Pull DC/DC converter design uisng UC3846

    I will be very thankful to you can provide some documents. I need some detailed theory regarding loop compensation etc.

    Regards
  5. Closed: Push Pull DC/DC converter design uisng UC3846

    hi,

    I want to design a isolated push-pull converter using UC3846 pwm controller. Specs are

    V(in) = 10-18VDC
    V(out) = 100VDC
    I(out) = 6 Amps

    I can implement non isolated version. I need...
  6. Replies
    3
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    357

    Closed: High Speed Data level converter

    hi,

    I need to convert 0-5 V volt 50% duty cycle to +5/-5V > Data rate is 20Mbit per second. Is there any simple solution available?

    Regards
  7. Replies
    6
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    2,064

    Closed: Re: RFID Coil design and Simulation

    Thanks for reply.

    Yes i am talking about near field applications.
  8. Replies
    6
    Views
    2,064

    Closed: Re: RFID Coil design and Simulation

    i want to use 390MHz.
  9. Replies
    6
    Views
    2,064

    Closed: RFID Coil design and Simulation

    hi

    I need some design application notes for RFID coils. Can i simulate coil in ADS or HFSS etc. Is there any example available for ADS momentum. Is it possible to beam forming using coil arrays?...
  10. Replies
    0
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    289

    Closed: BPSK Demodulator Design

    hi,

    I need a PSK/BPSK demodulator design. Transmitter and receiver both will be design on single board, and will share single carrier reference.

    Carrier frequency is 40MHz


    Regards
  11. Replies
    1
    Views
    2,263

    Closed: Coded Ultrasound Pulse obstacle finding

    hi,

    I want to implement the technique for obstacle finding , presented in the attached file.
    I don't have experience in signal processing. I need information regarding correlation.
    As...
  12. Replies
    1
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    320

    Closed: ADCMP551 OutPut Configuration

    hi,

    I want to use ADCMP551 as a high speed comparator . I am confused about output configuration. Is it possible to generate output level between 0 to 2.5v or close. Vcc is 5 volt.

    Regards
  13. Replies
    1
    Views
    3,089

    Closed: STM32F429II core board SDRAM NAND

    hi

    I want to buy this board. How can i find support for this board ?

    w*w.dhgate.com/product/mini-stm32f429ii-core-board-sdram-nand-stm32f429igt6/419530981.html

    Regards
  14. Replies
    3
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    474

    Closed: Re: MCP3918 front end design

    Thanks for reply.

    Should i connect pin CH0- of ADC to ground?

    Regards
  15. Replies
    3
    Views
    474

    Closed: MCP3918 front end design

    Hi

    I want to design front end buffer for MCP3918. The ADC will measure dc voltage present on a capacitor.
    Voltage range is 0 - 0.1 VDC. I want to use MCP6022 op-amp

    Regards
  16. Replies
    10
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    924

    Closed: Re: 2 nSec Pulse Amplification

    Thanks for reply.

    Its for GPR application.

    Regards
  17. Replies
    10
    Views
    924

    Closed: Re: 2 nSec Pulse Amplification

    Thanks for reply.

    I need 10-12 db gain.
  18. Replies
    10
    Views
    924

    Closed: Re: 2 nSec Pulse Amplification

    Thanks for reply

    More spes are

    DC capable amplifier ---------------------------no
    gain respectively output level-------------------not required
    input/output impedance 50 ohms...
  19. Replies
    10
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    924

    Closed: 2 nSec Pulse Amplification

    hi

    I want to amplify a short pulse of 2 nSec (Vp 200mV, Rise time 500pS). I have the following devices

    BF998
    BFR96
    BF135
    MSA-0886
    PD85004
    CGH40006P
  20. Replies
    4
    Views
    539

    Closed: Re: Fast rise time pulse filtering

    Thanks for reply.

    Can i say that the pulse have all frequencies for 0hz to 0.35/0.5nSec = 700 Mhz.
  21. Replies
    4
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    539

    Closed: Fast rise time pulse filtering

    hi

    A pulse of 5nS width, with rise time of 0.5nSec is applied to a narrow band pass filter. what can i expect at the output node of the filter?

    Regards
  22. Closed: Charger Circuit required for Super Capacitor Bank

    Hi ,

    I need a switching based charger circuit or ic for charging super Cap bank. Here are the specs

    Max charging voltage 12V
    Current 10 A

    Charging Source is Lead acid battery 12V.

    Regards
  23. Replies
    17
    Views
    1,661

    Closed: Re: Faulty Location In Coaxial Cable

    Thanks for reply.
    For swept frequency approach what bandwidth and sweep rate is required? is it possible to use few MHZ bandwidth and very fast sweep using DDS?
  24. Replies
    17
    Views
    1,661

    Closed: Re: Faulty Location In Coaxial Cable

    Thanks for reply.

    In case of time domain pulse, what should be the pulse width and duty-cycle? Is it high a frequency modulated rf pulse?
  25. Replies
    17
    Views
    1,661

    Closed: Re: Faulty Location In Coaxial Cable

    Thanks for reply

    I want to make the following design. The only thing which i dont understand is the design of directional coupler, it is built around BN43-2402.
    ...
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