Typical impedance in laboratory power supplies?

MaxmitbitByMaxmitbit

Hello, for documentation, I need to know the typical impedance of laboratory power supplies. I think it's close to 0, but I'm not sure. Background: I need to size the buffer capacitors for a linear voltage regulator. According to the datasheet, 0.1 microF (up to an impedance of 0.5 ohms)

Surely the laboratory power supply won't exceed these, but perhaps there is a typical range of impedances for laboratory power supplies?

Because of the galvanic isolation in the power supply, I don't have to pay attention to the impedance coming from the mains, right?
Thank you

Sincerely, Max

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Kelec
Kelec
2 years ago

What does this have to do with the linear voltage regulator?

The 100nF 0.5Ohm relate to the maximum ESR of the capacitors so that the controller is stable but not to the source.

The impedance of the laboratory power supply is not constant but depends on the operating point, but in the CV range against 0. Mine is supposed to have 100mR max, with the treads going to affect them significantly.

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