Go Down

Topic: Dummy load on ATX power supply (Read 651 times) previous topic - next topic

Voidugu

I'll get straight into the question:

Do i need to have a dummy load connected on an ATX power supply if it is going to be used as a bench power supply?
Why is this dummy load needed?
What happens if i do not connect it?
Will it harm the power supply if it is used without the load?

Thank you very much in advance

Best Regards
Dima

dhenry

Many of them need to have some load current to work.

I put a small 12v lamp there.

Voidugu

Could you please answer the other questions as well?

mauried

ATX supply needs a minimum load on its output to regulate.
If you dont have a load, the output voltages will rise above their nominal values.
Depending on what the switcher chip in the supply is , the supply can shut itself down
if the output voltage goes high.
Depending on the power rating of the supply, you will have to experiment to find out what
minimum load is needed.

Go Up
 

Quick Reply

With Quick-Reply you can write a post when viewing a topic without loading a new page. You can still use bulletin board code and smileys as you would in a normal post.

Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic.

Note: this post will not display until it's been approved by a moderator.
Name:
Email:

shortcuts: alt+s submit/post or alt+p preview