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Topic: Is there such a thing as a 1 amp, DC circuit breaker? (Read 391 times) previous topic - next topic

David82

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.

LarryD

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
The way you have it in your schematic isn't the same as how you have it wired up!

zoomkat


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
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

David82


Check radioshack

http://www.radioshack.com/category/index.jsp?categoryId=2032234

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

retrolefty



Check radioshack

http://www.radioshack.com/category/index.jsp?categoryId=2032234

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

zoomkat



Check radioshack

http://www.radioshack.com/category/index.jsp?categoryId=2032234

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
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

David82



http://www.radioshack.com/family/index.jsp?categoryId=12573697


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

zoomkat

Quote
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.
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

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