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Old 19th February 2012, 08:11 AM   #1
deuce42 is offline deuce42  Australia
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Default Plugging an 80w rated soldering iron into a 40watt power supply


My apologies if this is a stupid question but I am trying to understand whether I can use two items I have together?

I have a Weller 24v soldering station power supply, I believe its rating on the back sticker says output: 24v/2amps max.

I also have a weller soldering iron which is rated at 80watts and runs on 24v.

Rather than buying a new iron or power supply, i am wondering if the supply I have can power the soldering iron, just at a lower amount (I am guessing 48w, eg 24x2=48)?

My concern is whether instead of only powering at 48w, instead the iron might try and draw 80w out of the power supply and hence blow the power supply - my house, myself etc in the process.

I realise this is a novice question but am slightly confused.


Last edited by deuce42; 19th February 2012 at 08:53 AM.
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Old 19th February 2012, 01:58 PM   #2
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The power supply will be very unhappy. It's designed to output 24V but when connected to that iron, the supply doesn't have the horsepower to continue outputting 24V. So it will either shut itself off or blow it's fuse.
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