Semiconductor Continuity Checker

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The Tektronix Semiconductor Continuity Checker was probably made in 1974. It resembles the continuity checking part of the Hy-Tronix 900, which is described in US Patent 3601698.

Pictures

  • The top panel is attached by two harmonica connectors: one for the power switch and one for everything else

    The top panel is attached by two harmonica connectors: one for the power switch and one for everything else

  • The amber lamp flashes when the instrument is on but no device is inserted

    The amber lamp flashes when the instrument is on but no device is inserted

  • Two green lamp illuminate when a good NPN is inserted

    Two green lamp illuminate when a good NPN is inserted

  • Open circuit voltage applied to the diode test fixture

    Open circuit voltage applied to the diode test fixture

  • Hy-tronix 900

    Hy-tronix 900

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