Tech 162 Analog circuit design

Discussion in 'The Projects Forum' started by Rajit28, Nov 10, 2008.

  1. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    any info other than obvious website on XR 2206 circuit layout.:cool:
     
  2. scubasteve_911

    Senior Member

    Dec 27, 2007
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  3. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    Thanks. i heard you are a senior member how does one become

    a senior member.:cool:
     
  4. SgtWookie

    Expert

    Jul 17, 2007
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    We become Senior Members by contributing to the forums.

    The XR2206 is not a particularly easy IC to use, nor to obtain. If you have one, I suggest that you experiment with lots of cheap IC's first, so that your XR2206 will still be working when you'll be able to put it in a "good" circuit.

    If you are not careful, you will very quickly destroy it.
     
  5. hgmjr

    Moderator

    Jan 28, 2005
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    The designation of "senior member" is earned when the member submits their 100th post.

    hgmjr
     
  6. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    thanks for the advice.:cool:
     
  7. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    .

    XR 2206 is easily available ,advice on easy to use IC.
     
  8. SgtWookie

    Expert

    Jul 17, 2007
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    Why not start with 555/556 timers, and/or making a function generator out of several opamps? There are quite a few schematics around for such things.

    Opamps and 555/556 timers are very cheap nowadays.
     
  9. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    is 555/556 Op-amp similar to XR 2206.?
     
  10. davefromnj

    New Member

    Oct 14, 2008
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    If you want to make a function generator try the 8038 chip.
     
  11. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    is 8038 made by XR company.
     
  12. SgtWookie

    Expert

    Jul 17, 2007
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    Turns out the ICL8038 is no longer made either.
    NTE864 is the same thing, but ridiculously expensive.

    XR2206 IC's can still be purchased for under $4.
    Here is one reputable supplier:
    https://www.jameco.com/webapp/wcs/s...storeId=10001&catalogId=10001&productId=34972

    Future Electronics also carries them:
    http://www.futureelectronics.com/en...tion-generators/Pages/3238037-XR2206CP-F.aspx
    If the above link doesn't work, go to their home page:
    http://www.futureelectronics.com
    and search for XR2206CP
    I have never purchased anything from Future Electronics.
     
    Last edited: Dec 1, 2008
  13. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    NTE864 is the same thing, but ridiculously expensive.

    how expensive are we talking about?

    budget for college is around $ 100 or so.

    that is for IC parts only.
     
  14. hgmjr

    Moderator

    Jan 28, 2005
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    I believe the device was introduced by Intersil. EXAR had a similar part.

    hgmjr
     
  15. beenthere

    Retired Moderator

    Apr 20, 2004
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    Check Mouser's price for the NTE864 (might be part number 538-nte864). I got a couple for $8.40 a year or so ago.

    No - it's 526-NTE864, but the price is now $51 and change. Not worth it!
     
  16. SgtWookie

    Expert

    Jul 17, 2007
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    Ridiculously expensive.

    Buy two or three XR2206 ICs from Jameco or Future Electronics. That way you will have spares in case you burn one up.

    If you buy an NTE864, you will pay about 15-20 times what the "real thing" will cost you.

    NTE is a "vulture vendor"; when the end of a run of IC's is announced, they'll buy a number of them with their own "NTE numbers" printed on them.

    Their cross-reference guide goes but one way; from other manufacturer's part numbers to their own.

    You wind up paying anywhere from 5x to 25x the price what the original part cost. If it's a repair job, the inflated cost is passed on to the consumer.
     
    Last edited: Dec 1, 2008
  17. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    $ 51 for a IC are you sure?:eek:
     
  18. beenthere

    Retired Moderator

    Apr 20, 2004
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    Yes. That is a real rip-off. I used to pay $4.80 for the ICL8038CCJD from Intersil.
     
  19. Rajit28

    Thread Starter Active Member

    Oct 21, 2008
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    even $ 4.80 seems a little high, this must be a expensive

    supplier.:eek:
     
  20. beenthere

    Retired Moderator

    Apr 20, 2004
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    It was a good deal. It's possible to use it as a VCO, and it has sine, square, and triangle wave outputs. You can't get $5.00 in parts to do all that.
     
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