Exploring Nixie Tubes Frequency Counter
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- Testing my new scrap-find. The fan sounds bad, but I bet it can be lubricated and brought back to working (silent) order.
- Watch them glow. Listen to them hum. They are NL-809
- I have the Fairchild 8220 connected to a Dallas DS32KHz temperature-compensated crystal oscillator. The DS32KHz is supposed ...
- How to build a programmable
- We rescue a Hewlett-Packard 5327B
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An old I got this old, beat-up I'm working on turning this busted P.O.
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