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3 votes

Are measurements of battery voltage enough to test its state of health?

I've spent a career building a few instances of battery-powered equipment, with a lot of planned projects that didn't come to fruition. This means that I've scrutinized a lot of methods, done a lot ...
TimWescott's user avatar
  • 45.8k
2 votes

Are measurements of battery voltage enough to test its state of health?

Yes, you're right – from the open-circuit voltage, you cannot infer the internal resistance, nor the remaining battery capacity. The power that the battery can supply must be measured. I'd say the ...
Marcus Müller's user avatar
1 vote

Why does a DC voltage float with respect to ground?

Even though there's no direct connection between the 1.3kV voltage source and ground, there is capacitive coupling, shown by C1 and C2 here: simulate this circuit – Schematic created using ...
Simon Fitch's user avatar
  • 32.6k
1 vote

34401A Remote Measurement Time

Without knowing sufficient details about yout setup, I think there are a couple of notes that could be taken int account (some of them could not apply): MATLAB SIDE 1. Trigger Command: In the HP ...
Dirceu Rodrigues Jr's user avatar
2 votes
Accepted

Can diodes be tested successfully in situ?

Maybe. Let's assume any capacitor is discharged fully, otherwise you can get odd effects such as negative resistance readings or smoke emissions from the DMM. Let's also assume that you know it's ...
Spehro Pefhany's user avatar
0 votes

34401A Remote Measurement Time

To speed the measurement up you could decrease the resolution. At high resolution the 34401 is not particularly fast. That may not meet your requirements though.
JkingNH's user avatar
  • 56
4 votes

Can I measure the internal termination resistance of a MIPI receiver?

To be honest with you, focusing on the receiver impedance is probably a huge waste of time. Is it possible to measure the internal termination resistance of a chip using a multimeter? In a word, no. ...
hacktastical's user avatar
  • 52.7k
2 votes

Can I measure the internal termination resistance of a MIPI receiver?

What is the 'best' way to measure the resistance? Don't measure it at all, it doesn't exist as a constant, nor does it really matter. Instead consider this: Why do you wonder about the resistance? ...
Marcus Müller's user avatar
1 vote

Resistance measurement with DMMs

Multimeters measure resistance by injecting a known current into the circuit under test and measuring the resultant voltage drop. From that the resistance is calculated by \$ R = \frac V I \$. Your ...
Transistor's user avatar
  • 175k
2 votes

How do modern cheap multimeters survive a massive range of voltages?

Multimeter inputs are high impedance only in mild overrange conditions. Once the voltage is much higher, they become low impedance. A clamping circuit limits the voltages on the sensitive internal ...
Kuba hasn't forgotten Monica's user avatar

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