Products > Test Equipment
Zeeweii DSO1C81
wasedadoc:
--- Quote from: Aldo22 on August 28, 2024, 04:07:14 pm ---
--- Quote from: wasedadoc on August 28, 2024, 03:49:49 pm ---RMS is meaningless without knowing the waveform. For example, the peak to peak of a 100v rms rectangular wave with 5% duty cycle is vastly more than the peak to peak of a 100v rms square wave (50% duty cycle).
Only peak voltage is a definitive spec.
--- End quote ---
Hmm, but that would be strange, since 230V mains is in Vrms.
So that would only be about 14Vrms (sine) or 140Vrms at 10x?
My Hantek explicitly states the maximum values in Vrms in the manual:
--- Quote from: DSO2000 Manual ---Maximum Input Voltage: 300VRMS (10X)
--- End quote ---
--- End quote ---
I don't understand what point you are trying to make in that first paragraph.
As for the Hantek spec, I repeat my assertion that without specifying the waveform shape it is meaningless. Agreed AC mains is usually sine but scopes look at many waveforms which are not.
Gyro:
I don't know how common that style of PCB mount 18650 clip is (I've seen them for AA), but the end of the cell would be acquiring an extra layer of Kapton in my home.
Aldo22:
--- Quote from: wasedadoc on August 28, 2024, 04:29:15 pm ---I don't understand what point you are trying to make in that first paragraph.
--- End quote ---
Well, you say that a maximum of 40Vpp is possible at the input (BNC).
That corresponds to 14.4Vrms with sine wave respectively 144Vrms in 10x mode.
That would be far less than the European 230 volts.
I'm not sure if that's right.
I mean, my pathetic Fnirsi DSO-TC2 can do that -> Attachment
Plus Zeeweii writes in the manual:
--- Quote ---4.How to measure 220V mains?
Answer: First remove the USB cable (isolation), then adjust the probe to the 10X
position, adjust the vertical sensitivity to 100V, and adjust the time base to 10ms, and
then connect the probe to the neutral wire and the live wire (be careful!).
--- End quote ---
So the specifications are probably in Vrms.
Aldo22:
I think I know how to read it now.
It's totally nuts. |O
The first value (40V 1x) is in Vp (not Vpp), the second value (220V 10x) is from the marketing department. China has 220V mains, they just want to say that it is suitable for mains.
The technical limit is probably 283Vrms (sine).
Who wants to try it out? :palm:
ptluis:
--- Quote from: Aldo22 on August 28, 2024, 05:50:41 pm ---
Who wants to try it out? :palm:
--- End quote ---
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