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Can a battery powered pen be converted to a plug-in?

MojoLA

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Is there any way to rig up a battery powered pen/portable laser to be plugged into the wall? Presumably with a DC adaptor...

I'm guessing a pen that's powered by 2 AAAs would need a 3V DC adaptor... but how would you convert it?

Is it possible?
 

MojoLA

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TJ said: "Clip a + wire on the body, and solder a - wire on the spring. Use a 3v source for the power."

I'd rather not "ruin" the pen by soldering, can't I just twist a wire onto the spring?
 

X FLY

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TJ said: "Clip a + wire on the body, and solder a - wire on the spring. Use a 3v source for the power."

I'd rather not "ruin" the pen by soldering, can't I just twist a wire onto the spring?
Yep, but it would be more "secure" if you soldered it.
 

MojoLA

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If I (and anyone else) spends $250 on a yellow pen, I think we're going to be reluctant to permanently alter it.

In my case, since the pen will just sit there powering the laser show, I'm not too worried about a perfectly secure connection.

When you say clip the + wire to the body, do you literally mean anywhere on the body of the pen? Much of these things can be plastic or rubberized...
 
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You can use a paper clip. Just make sure the wire touches the inside of the barrel, or the outside if the threads are exposed.
 
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You can try making a dummy battery with wood and then running a piece of metal (could be solder wire) through it's length, then getting two wires out of it and connecting it to a power supply.
 
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You can try making a dummy battery with wood and then running a piece of metal (could be solder wire) through it's length, then getting two wires out of it and connecting it to a power supply.
How are you going to close the laser with 2 wires hanging out? :whistle:
 




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