Questions tagged [probe]
A physical device used to connect an electronic instrument (such as an oscilloscope) to a circuit in order to measure quantities such as voltage, current, temperature, etc. Use in conjunction with related tags such as "oscilloscope", "voltmeter", etc., as applicable.
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How to accurately measure ~1 A on 3-30 MHz?
I would like to measure the efficiency of an HF (3-30 MHz) class C power amplifier. In order to do this, I have to accurately measure AC+DC RMS current in the order of 1 A or so. Most instruments are ...
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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 ...
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Probe specific performance on oscilloscope - offset
I have been having a weird unexplainable issue with my set-up. I am currently testing a flyback converter with a current sense source resistor. The scope shows a DC offset when using two different ...
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High voltage ripple measurement using a 1000:1 probe
I am measuring the DC voltage ripple at 400V provided from CAEN DT5534EM by connecting the output to the oscilloscope (AC coupling) through a 1000:1 probe. From the picture below, the ripple is around ...
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Oscilloscope impedance mismatch issue
We have connected an oscilloscope and a function generator using a connector plate. We have terminated the signal connections from the oscilloscope & the function generator to the connector plate ...
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Wrong AC mains probing or Issue with Diac/Triac?
Note: Solved, I posted my reply/answer
I am working on this circuit, where I try to control the fire angle on a Thyristor, using a Diac:
simulate this circuit – Schematic created using ...
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Differential probe input impedance 1Meg, but 50ohm oscilloscope mode recommended
I will be experimenting with the Keysight company's N2792A differential probe.
Looking at the datasheet of the probe, the input impedance is 1Meg, but it is said to be used with the 50ohm impedance ...
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Is there a standard way to probe SPI without causing data corruption?
When I connect my oscilloscope probes to my SPI lines, the line voltages get affected a lot and so my SPI comms fail.
I am using a breadboard as an intermediary between the two devices and adding ...
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Why does an overcompensated oscilloscope probe give spikes higher than the input voltage?
Does anyone knows why an over compensated probe gives voltage spikes bigger than the maximum voltage of the input signal (or bigger Vpeaks?)
These spikes looks to me like a parasitic inductance but I ...
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Oscilloscope design question
To begin with,I am not designig an oscilloscope but am curious about how certain parameters are determined. My questions might sound very trivial but I would be grateful if someone could answer them ...
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Probable heat probe malfunction, how do I test it?
Disclaimer
I'm not very sure about the stack where I'm suppose to post my question (between here and "Home Improvement" stack.)
Question
A few days ago my oven started beeping repeatedly ...
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Tektronix P6015 Replacement Potentiometer Considerations
I’ve acquired (saved from the landfill) an old Tektronix high voltage probe, model P6015. The probe body and cable are in decent condition, but I discovered two damaged potentiometers in the ...
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Soldering connector on PCB to connect to logic analyser or scope
When it comes to digital circuits, it is often important to get certain internal design signals to an I/O pin and then view it on scope. This is in-spite of all the other techniques that exist to ...
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What is the PSPICE model of my probe + oscilloscope?
The oscilloscope and probe manufacturer gives me the following input impedance data:
Oscilloscope
Input impedance/capacitance: 1 MΩ ± 2%, 16 pF ±3 pF
Probe characteristics
Bandwidth DC to 75 MHz
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How to measure high frequency with an oscilloscope without loading circuit down too much?
I am experimenting with building a high frequency common emitter circuit shown here. It operates at 144MHz and it should have around a gain of 4.
Here is the simulated circuit. I do not have any load ...
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