Language: 
To browser these website, it's necessary to store cookies on your computer.
The cookies contain no personal information, they are required for program control.
  the storage of cookies while browsing this website, on Login and Register.

GDPR and DSGVO law

Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Google Search

Custom Search

Author Topic: Geiger Counter DIY Cheap using Disposable Camera Circuit  (Read 16355 times)

Offline gadgetmall

  • elite_member
  • Hero Member
  • ******
  • Posts: 1733
    • Alternative Energy
Geiger Counter DIY Cheap using Disposable Camera Circuit
« on: September 11, 2012, 05:50:20 PM »
Make a very Sensitive geiger counter with a cheap muller tube from ebay and a disposable camera circuit !

there is an optional part of the circuit you don't need but is just a few more parts a logic level N-fet and a10k resistor are needed for the meter hookup . .the  detector built without those two parts will have audio Clicks like a good detector when radioactivity is detected including background normal in the air particles . .Looking forward to your Builds !!

http://www.youtube.com/watch?v=G9Ljmo875kU

thanks to Kirk @ mad Scientist Hut
http://madscientisthut.com/wordpress/category/geiger-counter/

http://www.ebay.com/itm/SI-39G-39-RUSSIAN-MADE-GEIGER-MUELLER-TUBE-DETECT-BETA-AND-GAMMA-RAYS-/280927906167?pt=Vintage_Electronics_R2&;;;hash=item41689ba977

http://www.ebay.com/itm/Military-Russian-Soviet-GEIGER-TUBE-COUNTER-SI-3BG-SI-3BG-SI3BG-3-NEW-/251148641400?pt=BI_Security_Fire_Protection&;;hash=item3a79a02478



The tubes are on ebay for about 10 bucks more or  less  but the plans call for a russian SBM20 geiger tube which is a bit more ..according to his plans The Russian surplus SBM20 runs fine at 280-500V , so I chose to set my output to ~340VDC because at this level it draws less current from the batteries.

the 10 dollar geiger counter tubes are rated  Working Voltage in pulse mode = 380...460 V and Working Voltage in current mode = 382...398 V  so they should  work fine with this circuit as the only difference is less voltage to run them !
 




all the parts for this are less than 30 dollars including the tube and the cheap 3 dollar multimeter .
i can show you how the flash unit can also be a fuji instead of the one shown . Very simple modifications .
this probably is not for the unexperienced person .but if you can make a Darlington circuit then this is not that hard and you can use radioshack pcb project boards to solder your components . get a big enuff enclosure and you can put your meter ,speaker and make a tube enclosure out of a piece of pvc  or copper pipe and some hv wire or satellite coax  and you got a nice geiger counter .. Or you can buy a ready made detector for around 160 up . Stay away from the old Victoreen Yellow CD-v717 . It is not a Geiger counter even though it looks like one.

this is info available on the internet and brought to your attention to build one now because radiations is a real problem everywhere from the Japan disaster .

Gadget

Offline gadgetmall

  • elite_member
  • Hero Member
  • ******
  • Posts: 1733
    • Alternative Energy
Re: Geiger Counter DIY Cheap using Disposable Camera Circuit
« Reply #1 on: September 11, 2012, 08:28:54 PM »
If you just want to detect Ion radiation http://www.youtube.com/watch?NR=1&feature=endscreen&v=DtQ746MPrNs


http://www.youtube.com/watch?feature=endscreen&NR=1&v=cfVBW622Vbs

a 4 dollar Nuclear rad detector . Not very strong but if you have a good source like an americium dot or a thorium welding rod or an older camping lantern mantel stuck in it you can see it on your meter .

gadget