The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

The New Hotness

  • Relics of the Empire: Electrometer Resistors

    From Russia, probably without love, routed through Bulgaria via eBay:

    Electrometer resistors - wrapped
    Electrometer resistors – wrapped

    They’re glass electrometer resistors from late in the Cold War:

    Russian 100 G electrometer resistor
    Russian 100 G electrometer resistor

    That one presents 100 GΩ between its lead wires, which would count as open in any other circuit I’ve ever built.

    The assortment arrived much richer than advertised, although I’d be even happier with a few more 10 GΩ and a few less 100 MΩ resistors. The 1000 GΩ = 1 TΩ resistor in the upper right seems absurd on the face of it, but there it sits.

    I have no way to measure these, other than to build an electrometer amp and see what happens…