Wonderful World of Dosimeters & Teardown

[@AppliedCryogenics]

This was an entertaining tear down to watch. I have a theory about the mystery chip, since these diodes give off on the order of Pico amps when exposed to low-level background radiation, they probably need an electrometer which has some analog charge integration voodoo inside. Like, a low noise, low input offset integrating amplifier per each detector and a way to dump. Charge off of the capacitor and count buckets.

[@retireeelectronics2649]

It will be interesting to see how this dosimeter compares to other 3 brands I got at that auction. It was amazing how much shielding there was but probably to be expected since the company was targeting military contracts.

[@SymbolTech21]

You are in but still out!

[@retireeelectronics2649]

They definitely made that with no serviceable parts (-: