The Romer-Lewin ring with capacitors (part 2)
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- Опубліковано 22 сер 2024
- Accessory considerations to my previous video about the Romer-Lewin ring with capacitors.
1. It would be better not to use electrolytic capacitors, since these devices do not like to be reverse polarized. But that is what I had available at the moment. If you choose to do this experiment yourself, I advise you to use another type of capacitor.
2. Experimental results agree with computed values. The shape of the measuring loops - the probes - is completely irrelevant.
The next video will be about the Romer-Lewin ring with... inductors. It should not be hard to guess what will come after that.
What is the resistance of the path along the connections to and from the oscilloscope and through your oscilloscope.
Input resistance of the scope is 1 meg; probes and copper interconnects in the ring have negligible resistance. Scope measurements confirm what I have measured earlier (not shown in the video) with my multimeter (10meg minimum input impedance).
Even the ESR of these cheap caps (which is usually a few ohms) is not playing a part in this circuit. (The ring with inductors is another thing...)
@@copernicofelinis
I have made this circuit with resistors.
Are the grounds for the channels you are using on your scope for this demonstration electrically connected together by the manufacturer at the scope .
@@woodcoast5026 yes, of course. It does not affect the measurements, as can be inferred from the fact that I get the same values when I measure the voltage with a voltmeter (which is floating).