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Choosing the correct AC DC adaptor

NickCrom

Aug 14, 2022
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Aug 14, 2022
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Hello, Can anyone help me out in choosing the correct AD DC adaptor to power a car windshield wiper motor? What are the specs I will require when buying an adaptor?
The motor powers a kinetic sculpture I created a few years ago - I have lost the adaptor which I now need to replace!
 

Bluejets

Oct 5, 2014
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You will need the voltage and current ratings of the motor to begin with.
Then, as it is a motor, factor in a savefty margin as motors tend to draw large currents at startup and can pull the voltage down to an unusable level if the supply does not have the capacity.
Many instances, now that you mention winscreen wiper motor, would be to run say a sealed lead acid battery and recharge with a smallish adaptor.
 
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Keonte45

Aug 29, 2022
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Aug 29, 2022
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I saw a tutorial for this on YouTube earlier this year. Why don't you check there?
 

Minder

Apr 24, 2015
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Apr 24, 2015
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What I would do is look for an older style AC/DC adaptor (Wall-Wart).
These are linear supplies and can handle the in-rush, although not usually regulated, you do not need that for your motor application.
Usually tell them by being a heavier feature!
 
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