Clocks

Nixie Transistor Clock

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    Volumes

    1. Vol 1 How It Works Theory of operation for the KABtronics Nixie Transistor Clock: no integrated circuits, a mains timebase, a ripple counter of discrete flip-flops, and six IN-12A tubes
    2. Vol 2 The High-Voltage Supply A review of the clock's fully discrete boost converter: how it regulates, what the manual gets slightly wrong, and why its 2-joule capacitor deserves more respect than most nixie supplies
    3. Vol 3 Building It My version 5 board, the parts list checked against the schematic, the parts that are now obsolete, the manual's build order, and the build log
    4. Vol 4 Running It Power, setting the time, mains-locked accuracy, the hour shut-off, troubleshooting a 2,917-joint board, and living with it
    5. Vol 5 Sourcing the Parts A complete parts list for building the clock on a bare version 5 board: every original part, its current replacement, and why it changed