Lesson 7: Probing Part 2 - Active Probes
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- čas přidán 25. 07. 2024
- This lesson begins by explaining some of the limitations of standard passive probes. Examples of high frequency, high voltage, and current measurements are then demonstrated using a high-frequency differential active probe, a high-voltage active probe, and a current probe.
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#oscilloscope #scope #scopeprobe #oscilloscopeprobe #scopeprobes #oscilloscopeprobes #activeprobe #activeprobes #hfprobe #hvprobe #currentprobe #halleffect - Věda a technologie
Johnnie retired. Then he came back! The man has passion!
Absolutely fascinating. Thank you! 😁
While teaching undergraduate courses at UCCS (University of Colorado at Colorado Springs), I mentioned briefly in an early lecture that if they were to connect an oscilloscope to the the AC outlet (in the US that is ~120V @ 60 Hz), that they could "see" the sine wave.
Of course, some student tried doing that using a passive probe when I was not in the lab. BOOM! Thankfully nobody was hurt. The probe was toast.
I was very careful what I said in future lectures!
Here is one of the missing lessons, finally! 😊
You should also emphasize, that the GND referenced probes pose a big problem (danger of HV short and damage), when you measure inside mains powered equipment.
See Dave Jones videos about this subject.
That's correct. The 120-V measurement is possible if you know what hole in the outlet is the ''live'' conductor.
If this poses a "big problem" for you, you need more experience! With experience it is routine operations.
Thank you!
Thank you
Boiler Up!!!
hi sir,
how to calculate the inductance value of resistor at high frequency. we have Keysight lab in our university we r having spectrum analyzer ,vna , oscilloscopes but idk how to calculate it. our oscilloscopes r having maximum of only 100 mhz so we cannot generate using it.
does the neon sign or the florescent light in the room effect the measurement as far as interference on your instruments? in Reference to 11 minutes into the video, yes i can agree your grid can effect it. just asking you for you are the expert and im new to these skills. just this case prompted me to ask you about it.
would be cool to pull these same measurements with the lights turned off to determine if they are the source of the interference
Well done, but one remark: For the use of a Hall sensor it is not nessecary to build a loop, BUT you have to pay attention of the direction of the electric flow as marked on the probe as can seen shortly in the video on czcams.com/video/4H9xCUsTnKg/video.html
Somehow the sound is not too good?