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| Measuring current and voltage phase difference. |
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| Gibson486:
I have this load that is completely capacitive, but I want to see how the current and voltage phase changes as the load changes. I would use a current probe, but everything is on a pcb, so there is no wire to wrap around. Any ideas on how I can measure this? |
| SilverSolder:
--- Quote from: Gibson486 on April 30, 2020, 02:07:15 am --- I have this load that is completely capacitive, but I want to see how the current and voltage phase changes as the load changes. I would use a current probe, but everything is on a pcb, so there is no wire to wrap around. Any ideas on how I can measure this? --- End quote --- Hall effect sensor? |
| jbb:
The classic method is to cut a track and solder on a little loop of wire to clip onto. If you can’t do that and there isn’t much room, the AIM TTI iProber can directly measure current in a trace. It’s helpful, but very susceptible to external magnetic fields (eg you get DC offset from your steel table leg) and the gain varies with how you hold it. |
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