LEADER LDC-822A Digital Counter 80MHz 1981 test teardown

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  • เผยแพร่เมื่อ 5 ธ.ค. 2024

ความคิดเห็น • 4

  • @zebo-the-fat
    @zebo-the-fat 12 วันที่ผ่านมา +2

    That is a nice display!

  • @douro20
    @douro20 9 วันที่ผ่านมา +2

    There's one ECL chip- an MC10116 which is a triple differential amplifier. The datasheet says that if any of the amplifiers are not used, the corresponding input must be tied to the base bias output.

  • @Edisson.
    @Edisson. 11 วันที่ผ่านมา +2

    Hi Thomas, nice piece, I like the light of VFD displays, I heard that you used Kontakt 61 and air for cleaning. I have been using Kontakt chemistry for many years, but 61 is the last part of (as I call it) the holy trinity - 1) Kontakt 60 - dissolves dirt and oxides, 2) Kontakt WL - rinses dirt and K60 residues, 3) Kontakt 61 - creates a protective film on the treated contacts. Depending on the contact material, for gold-plated contacts I will use Kontakt Gold instead of K61.
    I also have the digit extension on my small programmable counter that I use as a monitor for a Tektronix oscilloscope for audio equipment repairs, it is Wolf's design - a four-digit counter extended by one place - it is enough for an approximate reading.
    Nice day 🙂 Tom

  • @douro20
    @douro20 9 วันที่ผ่านมา +1

    If you look at R&S spectrum analysers they often have a grounded microfine copper mesh covering the display.