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HP ICs from and old Freq counter

Discussion in 'Electronic Components' started by Allen Bong, Aug 26, 2003.

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  1. Allen Bong

    Allen Bong Guest

    Hi,

    My friend gave me an old, semi-dead HP frequency counters with a
    7-nixie-tube display which looks kind of cute. The model is HP5327C and I
    wanted very much to make it work again. Can someone help me with the HP
    inhouse chips below with their generic part numbers?

    1820-0119
    1820-0116
    1820-0092
    1820-0275
    1820-0729
    1820-0307
    1820-0143
    1820-0102
    1820-0054 = 7400 (actually 4342 DTL)
    1820-0147
    1820-0273
    1820-0274
    1820-0310
    1820-0253
    1820-0489
    1820-0212
    1820-0102
    1820-0440
    1820-0145

    Any help would be much appreciated. If a service manual could be obtained
    anywhere, it would be much better.

    Allen
     
  2. Jim Adney

    Jim Adney Guest

    Contact Matsuda, Ed
    PO Box 390613
    San Diego, CA 92149

    Home phone: 619-479-0225 (evenings and weekends OK)
    fax: 619-479-1670
    Sells H-P and Tektronix manuals, very helpful

    He can probably sell you a manual. Tell him your serial number, too,
    and ask for a manual that matches that number. The manuals for that
    era of instrument often included a pinout and description of each IC
    used in it that would let you figure out what it was. Sometimes that
    information is directly in the parts list.

    -
     
  3. Allen Bong

    Allen Bong Guest

    Thank you Jim, for your good advice. I will do it soon.

    Allen
     
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