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FBSMatt
Ireland
32 Posts |
 Posted - 08/14/2021 : 13:15:26
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| So recently out of curiosity, I put my 600+ to my ear with the speaker off, to see if could hear some electrical buzzing or whining (I'm weird like that). I did the the electrical noise but I also heard tiny clicks from it that correspond with the LED(I can also hear it with the LED off). Am I hearing the reaction inside the tube?! or is it something else in the circuit? This has amused me all day. |
What Signature? |
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| Reply #1
Damien68
France
780 Posts |
Posted - 08/14/2021 : 22:54:39
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many electronic devices make a little noise, this comes mainly from ceramic capacitors because they have a piezoelectric effect, ie they contract a little depending on the voltage applied above.
it is possible that the click comes from the tube because there is an electric arc which forms in the tube when it detects a particle, the heat produced can thus generate an acoustic signal but very weak, it can also come from 500v generator capacitors output if it ceramic one.
during a detection, the sudden variation in potential between the anode and the cathode of the tube will also modify the mechanical forces of electrical atraction in the tube between the anode (charged +) and the cathode (charged -) which in case of pancake tube like in 600+ can also generate an acoustic signal . but I don't know if it can be audible. |
Mastery is acquired by studying, with it everything becomes simple |
Edited by - Damien68 on 08/15/2021 01:56:23 |
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| Reply #2
EmfDev
2250 Posts |
Posted - 08/16/2021 : 09:52:07
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| It is also possible that the speaker is not completely off and the transistor/switch is still letting a very small amount of current. |
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| Reply #3
mojo66
Germany
32 Posts |
Posted - 08/30/2021 : 17:27:50
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| Yup. Try with the speaker physically disconnected. If you still hear a click then it could be a cap. The energy that a gamma induces in the Geiger tube is too low to produce an audible signal. |
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| Reply #4
BlueReda
USA
1 Posts |
Posted - 10/11/2021 : 02:08:16
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quote:
Originally posted by mojo66
Yup. Try with the speaker physically disconnected. If you still hear a click then it could be a cap. The energy that a gamma induces in the Geiger tube is too low to produce an audible signal. https://mcdvoice.me/
It is possible that the click comes from the tube because there is an electric arc which forms in the tube when it detects a particle, the heat produced can thus generate an acoustic signal but very weak, it can also come from 500v generator capacitors output if it ceramic one. |
Edited by - BlueReda on 10/11/2021 02:10:44 |
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something interesting.
