#36 in AC adapters
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Reddit mentions of SMAKNÂ Premium External Power Supply 3v 1A AC/DC Adapter, Plug Tip: 5.5mm x 2.5mm
Sentiment score: 2
Reddit mentions: 3
We found 3 Reddit mentions of SMAKNÂ Premium External Power Supply 3v 1A AC/DC Adapter, Plug Tip: 5.5mm x 2.5mm. Here are the top ones.
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- Input: 100-240 V AC 50/60 Hz
- Output: 3V, 1A
- Cord Length: 100 cm (about 3.2 ft)
- If the radio uses it: Please check that the DC jacks (mostly 3.5 mm * 1.35 mm) can not be used
Features:
Specs:
That's so awesome both that you were motivated to and were able to help your grandma!
Just a quick note about using a resistor to change voltage: You should not use a resistor divider to drop voltage with the intention of powering something else. The actual voltage at the "middle node" will change when the device starts drawing current. Probably the simplest solution would be to just buy a 3V wall wart.
The advice you were given was far more complex than you need.
Simply buy a 3vdc wall wart for $5 including shipping. Cut off the plug, and strip the leads. Connect the positive lead to every positive wire to the LED letters, and the negative lead to all the negatives. You could get away with twisting them all together and then taping, but soldering would be best. You could also crimp, use a wire nut, or use Wago push-in connectors. BAM, you're done.
Want to have it be switchable? Repurpose one of the switches from your letters. Simply cut the positive lead from the wall wart, and splice the switch in there. Or, you know, just unplug it.
To use a freakin' USB power supply and buck converters is ludicrous. Cancel your order.
ok. Makes sense. I think I edited my comment as you replied but do you think a 3v adapter that reviewers are saying has a VOC of 3.2v/puts out 3.2v with or without a load is too much? Seeing as AA batteries initially put off about 1.6v shouldn't it be ok?
And I have one last question if you don't mind- I need a wire that's as unnoticeable as possible to extend the length of the adapter. IS there any type of wire you recommend? Since its low voltage could I even use speaker wire?