# Power supply ratings

Discussion in 'General Electronics Discussion' started by champ1, Mar 9, 2019.

1. ### champ1

36
0
Jul 17, 2018
Hello

I am looking information for this 24V SMPS

It has a rating 24V Dc, 5.0A
so It means it can supply maximum 24V DC and 5.0A current
I want to calculate a minimum voltage and current it can supply

How to find minimum voltage and current it can supply to load ?

2. ### Bluejets

4,219
894
Oct 5, 2014
Output voltage is 24V, that's it.
Current drawn will depend on your circuit BUT only to a maximum of 5Amp.

Suggest you do a bit of basic electrical 101.

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3. ### AnalogKid

2,393
665
Jun 10, 2015
As above and from the labels on the device, it has a fixed, constant 24 V output. You can draw constantly any amount of current up to a max of 5,0 A.

Note - if this is a switching supply, it might have a minimum output current requirement. Check the datasheet or owner's manual. many switchers require a minimum load of 10% of the rated output current. In your case that would be 0.5 A. The transformer and regulator circuit in a switching supply are very different from those in a linear supply. In particular, the transformer requires a minimum amount of energy through it to stabilize its performance.

ak

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4. ### champ1

36
0
Jul 17, 2018
Does it provide a constant 5A to load?

How much minimum current it can be drawn?

Last edited: Mar 9, 2019
5. ### duke37

5,364
769
Jan 9, 2011
The output voltage is 24V DC and can be adjusted slightly by the screw.

The minimum output current will be zero if nothing is connected.
The actual current (5A Max) will be what the load demands. The limit may be by a current limit circuit, a fuze or by a fire.

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6. ### AnalogKid

2,393
665
Jun 10, 2015
No. It provides a constant 24 V to the load. This is a constant voltage power supply.

ak

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