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 2.GQ Geiger Muller Counter
 GQ GMC 320 HIGH Counts

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T O P I C    R E V I E W
Sorensonb Posted - 06/25/2023 : 10:56:16
Hello? I have a GMC 320 I purchased to monitor potential radiation emitting from a project I am working on that uses high frequency pulsed DC current and elec magnetic fields. The circuit that I am using calls for an earth ground on the negative side of the circuit. The issue I am having is that when I have the meter powered by the 2 prong usb supply when I operate the device I am working on I get extremely high counts from the meter. If I remove the 2 prong usb wall power supply and power the meter by the batteries I do not have this issue. Could anyone possible help me to figure out what is going on?
4   L A T E S T    R E P L I E S    (Newest First)
LucyCoffee Posted - 05/15/2024 : 21:43:00
It sounds like there may be some interference or noise introduced when using the USB power supply. This could be due to differences in grounding or electrical noise from the power source. Try using a different USB power supply or adding filtering components to reduce noise.
ullix Posted - 12/27/2023 : 02:43:41
Whatever type of machine this is - unless you are somewhere along the setup use 50 kilo-Volt there is not even a remote chance of creating radioactivity which any Geiger counter could detect!

When you do see counts in your Geiger counter, it is because of electric disturbances. The GMC counter are NOT immune to electric noise! But the numbers are utterly meaningless.
carterodell Posted - 12/26/2023 : 01:29:55
Happy day to you, Sorensonb! It is possible for there to be a very high amount of noise at the power supply.
EmfDev Posted - 06/26/2023 : 16:33:02
Hi Sorensonb, there maybe a very high power supply noise.

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