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ecocurious2 / MultiGeiger

Geigerzähler mit ESP32 und empfindlichem Si22g-Zählrohr (Gamma)
https://multigeiger.readthedocs.io/
GNU General Public License v3.0
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deal with the fold-back effect #281

Open ThomasWaldmann opened 4 years ago

ThomasWaldmann commented 4 years ago

See there:

https://en.wikipedia.org/wiki/Geiger%E2%80%93M%C3%BCller_tube

ThomasWaldmann commented 4 years ago

this might be a bug and with high radiation it might be even a dangerous one.

i've no idea whether our pulse detection circuitry could deal with lower amplitude pulses.

i guess we could notice this effect by a very high rate of HV charging pulses. fold-back effect would cause this and i guess also humidity or a short-circuit would cause this.

if we never get to the HV capacitor full state (400V), the status display already has some indication, it will display 7 instead of H. but i guess we need something better noticable.

ThomasWaldmann commented 4 years ago

to test this, someone would need to be able to do high-radiation tests. who can help with that?