All Questions
5
questions
0
votes
0
answers
77
views
Update --strange interaction while probing circuit
I'm encountering strange behavior from this Colpitts oscillator circuit when I probe what is an "isolated" output. Probing an isolated output is causing another otherwise good output signal ...
- 639
2
votes
2
answers
418
views
Single ended scope probes on equipment under test which ARE on an isolation transformer
I am using my company's new oscilloscope and I don't want to mess it up. I have searched all of the topics, but nothing tells me exactly what I want to know so I thought I would ask in case somebody ...
- 21
1
vote
1
answer
300
views
SMPS Testing: Differential Probes or Common lead and best Grounding practice
I'm testing a Switch Mode Power Supply that is not outputting the required voltage. It's only two prong, hot and neutral, and I wanted to get clarification on the best way to approach measuring the ...
- 73
3
votes
1
answer
528
views
How can I use an oscilloscope to measure voltages that are referenced to nodes several hundred volts apart?
In my organization, we often use four-channel oscilloscopes to check out products. Each probe reference might be several hundred volts away from the others, which makes using standard scopes ...
- 17.6k
6
votes
3
answers
5k
views
home brew isolated oscilloscope lead
The ground clip for an oscilloscope lead is normally connected within the instrument to the power supply earth, and there are surprising circumstances where this could matter. The situation is very ...
- 2,200