Need Elektor Electronics July/August 1993

Discussion in 'General Electronics Chat' started by Kaspars, Sep 29, 2011.

  1. Kaspars

    Thread Starter New Member

    Jun 9, 2011
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    Hi Everyone,

    Please help me. I really need Elektor Electronics July/August
    1993 magazine. If some one have it, please inform me.

    Also I you have it in home, maybe you can scan page 54.

    Thanks :)

    Best regards,
    Kaspars
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    What kind of circuit is you want. Even if we do not have the latter magazine we may help
     
  3. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    Elektor supplied, at least with the Spanish version, copies of several years in CD.

    Hope that helps
     
  4. SgtWookie

    Expert

    Jul 17, 2007
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    Elector sells a DVD with 1990 thru 1999 editions on it for ~$113.
     
  5. Kaspars

    Thread Starter New Member

    Jun 9, 2011
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    Yes, I know about spanish version, but UK version is different, so this article isn't in Spanish ver. magazine.
     
    Last edited: Dec 1, 2011
  6. Kaspars

    Thread Starter New Member

    Jun 9, 2011
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    I don't want to spend 113$ just for one article :/
     
  7. t06afre

    AAC Fanatic!

    May 11, 2009
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    Perhaps a library may have what you want
     
  8. Kaspars

    Thread Starter New Member

    Jun 9, 2011
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    Oki, I got this DVD in german, BUT there are all pages, but page 54 there isn't. There are page 53 and next is page 55! Amazing!
    So maybe someone who have this magazine at home can scan it?
     
    Last edited: Dec 1, 2011
  9. tgotwalt1158

    Member

    Feb 28, 2011
    111
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    You did not mention the purpose of the circuit yet you are interested to build this, which is quite baffling to me. Any way, it seems a receiver circuit built with three stages. First, the transistor is used as an RF Oscillator, amplifying the RF signal picked up by the antenna, which is being fed into the 2nd stage non-inverting operational amplifier. The amplified sine wave signal is being converted to square wave by the last 3rd stage op amp, used as a comparator to give the final data out put in the form of square wave that is an stream of zeroes and ones depending upon the edges of the square wave. For the value of the coil, you must know the frequency of the tuned circuit in your diagram.
    This is general circuit analysis. If we see in perspective of OOk that is on-off key modulation, the RF portion could be viewed as band pass filter, the middle portion is responsible for envelope and peak detection, which are the components of OOK de-modulator.
     
    Last edited: Oct 1, 2011
    Kaspars likes this.
  10. Kaspars

    Thread Starter New Member

    Jun 9, 2011
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    Hi,

    Thanks tgotwalt1158 for your answers :)
     
    Last edited: Oct 7, 2011
  11. tgotwalt1158

    Member

    Feb 28, 2011
    111
    18
    Hi Kaspars! So, you have two questions!
    1) You could use the ADF7901 for increasing power of transmitter with a higher frequency of your choice. Here is the data sheet of ADF7901 :
    http://www.analog.com/static/imported-files/data_sheets/ADF7901.pdf

    2) ---do---

    Hope, this will help you,
    Regards
     
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