Buying curiosity parts.

Discussion in 'General Electronics Chat' started by hp1729, Jan 1, 2016.

  1. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    1,948
    219
    Electronics is a hobby to me. Yes, I often buy parts just to learn new chips. I have bought LEDs by the pound. ICs? Yep, them too. Distributors like Electronic Goldmine often have a “box of ICs”. G19135 is a box of random ICs that occasionally goes on sale. What do you get? Here is a list of the last four times I have bought them. Quantity varies. Mostly the mix is digital. Sometimes a fair bit of analog. So far everything has been acceptable quality. Everything has been properly marked. Most parts are common gates and latches but often you find a rare chip. 74S124, dual voltage controlled oscillator. 74198, 8 bit bidirectional shift register. Averaged cost about $0.06 a piece.
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,006
    3,763
    Interesting. Thanks for putting that all together and sharing. My question is, how do you organize and store them? Do they all end up in a box? Do they end up in a box with little plastic bags of each (with labels, or, do you have divided boxes or drawers? My hobby has evolved and my wife describes it in terms of how I stored the parts (and the space I have for the workbench).
     
  3. MrSoftware

    Member

    Oct 29, 2013
    497
    122
    It takes a little time, bit I keep my inventory on a Google sheets doc. If I need a part, i look there first and it tells me what I have and where it's located, and sometimes a link to the data sheet. You have to be disciplined and edit the sheet as you use parts.
     
  4. atferrari

    AAC Fanatic!

    Jan 6, 2004
    2,648
    761
    In this country that kind of grab bags did exist in a limited version. Not a success because of what you got. Most of it dated and obscure chips.

    Still wondering if in the long term it is worth. Isn't it better to go straight to what you are interested on? Even at a much greater cost (because our situation) I bought ICs that way.

    I tend to think of myself as an organized (somewhat) hobbyist but having started several attempts to classify components ( and so many articles of the hundreds of magazines I subscribed to in the past) I realized that I did not want to be a slave of inventories and my lists are minimal.

    But, moving maybe in about 2 months I started to seriously consider a simple and organized way to have all parts in an unique rack with drawers, boxes or ??? I realized that size of parts vary so much that one does not fit to all. Hijacking over.
     
  5. ISB123

    Well-Known Member

    May 21, 2014
    1,239
    527
    Why Europe doesn't have such stores :(.
     
  6. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,866
    991

    There was a local one here. It did not have much in the way of individual components but it had a lot of surplus from all types of electronic equipment. A great place to go if guilding an unusual project.
     
  7. dl324

    Distinguished Member

    Mar 30, 2015
    3,242
    619
    Sounds like a business opportunity for someone.

    There's a company here that buys liquidated components and equipment by the pound. They recycled some things and sold the rest online and through eBay. I bought a lot of components and equipment from them when they used to allow local pick up.
     
  8. dannyf

    Well-Known Member

    Sep 13, 2015
    1,779
    360
    I have a bunch (=several thousands) low-noise GaAS Japanese dual-gate mosfets. Those are the most "exotic" parts I have, :)
     
  9. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    1,948
    219
    144 drawers plus uncounted many bags and plastic "shoe boxes". Inventory kept on Excel. Schematics kept in ORCAD.
     
  10. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    1,948
    219
    Yes, I buy prime parts also. But since "learning" is sometimes destructive I prefer to not find the limits of components on $5.00 op amps.
    I am an ex-instructor in technical schools and my "inventory" is just about enough to start a school.
     
  11. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    1,948
    219
    My favorite (no longer in business) was Poly Pack. Yes, a lot of the stuff was excess inventory, house numbered, or maybe even rejects.
     
  12. DickCappels

    Moderator

    Aug 21, 2008
    2,650
    632
    Got my first SCR from Polypacks back in the days of flower power. A great service to people on a very limited budget.
     
    Roderick Young likes this.
  13. Roderick Young

    Member

    Feb 22, 2015
    408
    168
    If memory serves, it was spelled "Polypaks." Such fond memories. Half of the fun was lying on the bed with their catalog, looking at all the different choices and dreaming of what I could make. There were many such companies.
     
  14. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    1,948
    219
    Thank you both for correcting my old memory. It was a very good time for education. Data books were so hard to come by in those days. Now you can find most companies or data sheets in the Internet.
     
Loading...