It's fun to visit past projects from decades ago, and see what sort of stuff younger-me was making back then. This is a little rechargeable light I carried in my toolbox for a while.

It used very early white LEDs that look a bit tame by modern standards, but were cutting edge back then. Note that NiMH cells are not like lithium cells. They can handle trickle charging for reasonable durations due to the chemistry recombining end of charge outgassing back into electrolyte.

The circuit also has a weird anomaly that looks like it was either a crackpot idea or a mistake.
But on the whole, I give the circuit an 8 out of 10 for functionality. While a bit cramped inside, a lot of shaped insulators had been inserted for good electrical separation.


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