I've got an old pen-type dosimeter, and I've been googling for hours trying to find charging/calibrating details.
As far as I have found, the charge voltage is (apparently) around 200 volts, and is basically an electrostatic charge.
So if I rectify and smooth the mains (UK 240V) and apply it to a high value (1M or more) pot, with a 10M resistor from the wiper connected to the dosimeter charging pin, and the neutral to the body of the dosimeter, will it work?
(Disclaimer - I've worked in electronics for 35 years, and I am not about to be electrocuted now. I just can't find enough parameter information.)
TIA Chris