24V power adapter into 12v device = kaput?


Old 12-22-10, 11:46 PM
Thread Starter
Join Date: May 2006
Location: USA
Posts: 4
Received 0 Votes on 0 Posts
24V power adapter into 12v device = kaput?

This may be more computer than electrical, not sure, but I hope someone might be able to answer this question.

In the course of moving around a room full of computers and accessories, I think I may have plugged a couple of external hard drives into a 24V power adapter (which is for a Dymo label machine) instead of the 12V adapters that were intended for it. Everything was disconnected at one point, and I plugged the hard drives in only to find they were not working, and they had been before. I tried different adapters after that, to no avail, and only then realized the Dymo adapter was sitting right next to the 12v adapters... so I'm thinking that it could have happened.

If it did, would that be the cause for the drives now not powering up?

(Would be a bonehead move on my part, but I suppose not the dumbest thing I've ever done...)

Thank you!
Sponsored Links
Old 12-23-10, 12:13 AM
Join Date: Mar 2006
Location: Wet side of Washington state.
Posts: 18,495
Received 36 Votes on 28 Posts
Yes, plugging a 12 volt device into a 24 volt supply could very well destroy the 12 volt device. I had a 12 volt VoIP adapter that I connected to a 12 volt battery and smoked it. I then ran voltage tests on the battery and discovered it had a voltage of about 13.8 volts because of the constantly connected charger. Since then I have been VERY careful about connecting any device to even a slightly higher voltage.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: