All Questions
Tagged with measurement multimeter
61
questions
0
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1
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How to Read Unipolar Square Waves on TRMS Multimeter
I'm trying to switch from reading my high-voltage unipolar square wave signal from a benchtop oscilloscope to a handheld multimeter, but I don't understand why my multimeter is giving the voltages it'...
- 69
2
votes
2
answers
138
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Can I measure the internal termination resistance of a MIPI receiver?
This question is further to: How accurate are internal terminators on chips with high speed differential inputs?.
I would like to measure the actual termination resistance inside one of these chips (...
- 27.5k
1
vote
1
answer
96
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Resistance measurement with DMMs
I had one doubt regarding resistance measurement from multimeters. I cannot show the schematic because it is confidential but I have added a circuit diagram. It refers to a gate driver circuit.
I am ...
- 275
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89
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Do digital multimeters work the same in vacuum?
We want to use a RS14 Handheld Digital Multimeter inside a glovebox and therefore we submit it to vacuum (0.1 bar) to come in and out of it, and to inert N2 atmosphere once it is inside the box.
Does ...
12
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6
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Why can't capacitors on PCBs be measured with a multimeter?
While looking at this article, it mentioned that one cannot test the capacitance of a capacitor while it is on a PCB. The explanation given is:
The reason is, that when a capacitor is inside the ...
- 913
7
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4
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5k
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Why does my multimeter measure different resistance values?
I am trying to find a fault on a multilayer board currently. I use mostly my multimeter in buzzer mode and came across such a situation.
When I measured a 1 kΩ resistor in buzzer mode it didn't beep ...
- 95
-1
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2
answers
542
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How to measure the output voltage of a half wave, bridge and center tapped rectifier circuit using a multimeter and also a signal on oscilloscope
I am pretty new in electronics. I am curious about how to test the output voltage of the rectifier using DMM. Where to put the lead to get the voltage from a circuit. Do I have to measure it across ...
1
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1
answer
162
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What is the signifance of parallel/series inductance/capacitance measurements on RLC meter?
The RLC meter I use includes these measurements: serial inductance, parallel inductance, serial capacitance, and parallel capacitance.
What are their differences, and how are they important ...
- 749
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97
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What does measuring a diode with a DMM's diode mode say about a circuit when the circuit is charged? [closed]
I've never used diode mode before on my DMM, so when I went to measure a diode in my circuit, I had a battery attached to it. I want to understand these measurements.
I measured four devices each with ...
- 47
-1
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1
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93
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Multimeter resistance measurement
I was doing a short and resistance test in my circuit on testpoints. I was testing the output of a voltage regulator.
When I place the + probe on the power and - probe to ground the meter takes time ...
- 379
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1
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80
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Help needed in understanding the lab observation regarding a diode
I was trying to understand the connections in a power supply board.
It was found that anode of below diode is connected to GND and -ve terminal of bulk capacitor.
Cathode of diode is connected to +ve ...
- 3,032
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2
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416
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Using a multimeter to measure the VPP directly from an AWG output, how to?
tomorrow I'll have a lab class and we were told what we'll do in advance. So, since I don't want to be unprepared I started thinking about how to "solve" the problems, and I'm hardstuck at ...
- 101
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6
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831
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Why is it not possible to measure PCB trace characteristic impedance using a multimeter?
I was looking into StackExchange posts for PCB trace impedance measurement.
How to measure trace impedance?
This posts clearly explains what the methods to be used for trace impedance measurement are.
...
- 2,593
0
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1
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273
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Diagnostics of the IGBT transistors in the three phase inverter
Let's say I have three phase voltage source inverter i.e. following circuit
I have a suspicion that one or more IGBTs are damaged. To confirm this hypothesis I have decided to use multimeter in ...
- 1,113
1
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2
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263
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Measuring high-side vs low-side current, different readings?
simulate this circuit – Schematic created using CircuitLab
I'm measuring current consumption of several different handheld devices (calculators, flashlights, etc), at the [lithium] battery. ...
- 11