Hello,
First of all, the kit is fantastic... awesome job designing it!
I seem to be having a problem with mine though. When I turn it on, I get the high-pitched whine I am supposed to hear, but no clicks or LED flashes. I have adjusted the variable resistor all the way in both directions, but still nothing. I do get an LED flash and a click when I short the two tube holders.
The problem may be in my soldering, but then why would it jump when I touch a wire to each of the ends? I hate to say this, but could the problem be with the tube?
Geiger Tube Problem?
Re: Geiger Tube Problem?
Do you have the tube installed the right way? The positive end (marked +) should be connected to J1.
Also, do you have a radioactive source you can test with? Even if you don't, you should be getting beeps every 5-10 seconds.
Also, do you have a radioactive source you can test with? Even if you don't, you should be getting beeps every 5-10 seconds.
Jeff Keyzer
http://mightyohm.com
http://mightyohm.com
-
- Posts: 2
- Joined: Thu Oct 04, 2012 7:34 pm
Re: Geiger Tube Problem?
It looks as if the polarity of my tube was indeed wrong. I had the SBM-20 text closer to the positive connector, but upon turning it around to check I got beeps. There does appear to be a small arrow above the CMB-20 writing, which I guess may be pointing to the (real) positive end.
Sorry to end up with such an easy question... thanks for all the help though!
Sorry to end up with such an easy question... thanks for all the help though!