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Author Topic: Is there such a thing as a 1 amp, DC circuit breaker?  (Read 294 times)
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I've tried googling it but found nothing that meets the requirement. I have an autonomous robot that uses servos. On rare occasion, it gets stuck in some weird position that will cause the servo to burn up. If I had a circuit breaker or even a low amp automotive fuse, I could save myself some money.
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You could look into "foldback current limiting"
https://www.google.ca/search?q=foldback+current+limiting&hl=en&tbo=u&rlz=1T4GZAZ_enCA411CA411&tbm=isch&source=univ&sa=X&ei=ipz0UMjcLuK2iwKmhIDABg&ved=0CDcQsAQ&biw=979&bih=401
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I've tried googling it but found nothing that meets the requirement. I have an autonomous robot that uses servos. On rare occasion, it gets stuck in some weird position that will cause the servo to burn up. If I had a circuit breaker or even a low amp automotive fuse, I could save myself some money.

Check radioshack

http://www.radioshack.com/category/index.jsp?categoryId=2032234
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I appreciate the help but that's obviously not it. I did finally find the answer though for anyone else that finds this thread. You use what is called a polyfuse (aka, polyswitch). They are perfect. They are cheap and open the circuit when they get hot while closing the circuit when they cool down. Perfect.
http://en.wikipedia.org/wiki/Resettable_fuse
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I appreciate the help but that's obviously not it. I did finally find the answer though for anyone else that finds this thread. You use what is called a polyfuse (aka, polyswitch). They are perfect. They are cheap and open the circuit when they get hot while closing the circuit when they cool down. Perfect.
http://en.wikipedia.org/wiki/Resettable_fuse

Yes I was just about to post about these:

http://www.epcos.com/inf/55/db/PTC_09/OC_Leaded_12V_160_C2_B0C_C_B599_5.pdf

Lefty
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I appreciate the help but that's obviously not it. I did finally find the answer though for anyone else that finds this thread. You use what is called a polyfuse (aka, polyswitch). They are perfect. They are cheap and open the circuit when they get hot while closing the circuit when they cool down. Perfect.
http://en.wikipedia.org/wiki/Resettable_fuse

 smiley-roll-blue

http://www.radioshack.com/family/index.jsp?categoryId=12573697
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yea, that's them. that wasn't your original link. Anyway, those are just online and are, of course, going to be over priced since it's radioshack.
http://www.digikey.com/catalog/en/partgroup/polyfuse-60r-series/10877
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that wasn't your original link

Sure they are, on the left side of the linked page is a listing of various types of fuses. I'd think you would start with a more conventional fuse for testing, but good luck with your polyfuse choise.
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