OK I'll reflow everything and see what happens.
Thanks for the help.
Search found 4 matches
- Tue May 22, 2012 6:14 pm
- Forum: Geiger Counter
- Topic: High voltage is low
- Replies: 5
- Views: 18587
- Fri May 18, 2012 9:58 pm
- Forum: Geiger Counter
- Topic: High voltage is low
- Replies: 5
- Views: 18587
Re: High voltage is low
I was using a Craftsman DMM rated for 500V to measure the HV.
- Fri May 18, 2012 9:57 pm
- Forum: Geiger Counter
- Topic: High voltage is low
- Replies: 5
- Views: 18587
Re: High voltage is low
Well, I reseated the 555 timer and now sometimes I get soft beeps and clicks 1/sec.
Sometimes when shorting the tube I get beeps or clicks. And the LED stays on constant after shorting sometimes.
Other times it just sits there doing nothing.
Very erratic behavior.
Sometimes when shorting the tube I get beeps or clicks. And the LED stays on constant after shorting sometimes.
Other times it just sits there doing nothing.
Very erratic behavior.
- Fri May 18, 2012 2:58 pm
- Forum: Geiger Counter
- Topic: High voltage is low
- Replies: 5
- Views: 18587
High voltage is low
Just finished assembling the kit and not getting any clicks. Checked the high voltage at TP2 and am getting 167-315 volts at either extreme of the adjustment pot. I believe this is too low for the tube to operate. What would cause the voltage to be low? I have already reflowed all solder joints and ...