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Measurements

A project log for DC Power Supply

Buying a ready-made power supply would be too easy, so I decided to make my own.

miroslav-hancarMiroslav Hancar 10/25/2024 at 22:260 Comments

I did some measurements to verify the dynamic properties of the power supply.

First, i measured the transient step load response in CV mode. Output voltage was set to 10V, load resistance was 5 Ohms switched by MOSFETs. 

(Yellow trace is the output voltage. Blue trace is the gate control signal)

Transient response in CV mode
CV - 10Vout, 5R load, ON
CV - 10Vout, 5R load, ON, zoomedCV - 5Vout, 5R load, OFF, zoomed
CV - 10Vout, 5R load, OFF, zoomed

Transition from CV to CC (and vice versa). Output voltage was to 10V, current limit to 1A and the load resistance was 5 Ohms.

CV to CC, 10Vout, 5R load, 1A current limit
from CC back to CV

Voltage rise after power-up

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