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Author Topic: Fuse questions  (Read 2699 times)

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RayB

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Fuse questions
« on: October 14, 2010, 06:19:06 pm »
If the specs call for an 8A slowblow, can I get away with using a fastblow?

Or, could I use a 7A slowblow??

As you might guess, I couldn't find 8A SB
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Q*Bert_OP

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Re: Fuse questions
« Reply #1 on: October 14, 2010, 06:28:28 pm »
Fast blow can be substituted in place of slow blow, but not the other way around. Also, you can put in a lower rated fuse, but not the other way around. The only downside is doing either or both can cause the improper value fuse to blow prematurely, possibly with out any circuit problems.
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smartbomb2084

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Re: Fuse questions
« Reply #2 on: October 15, 2010, 08:07:47 pm »
NAILS for FUSES ?!?!?!?!

Is that the extent of your troubleshooting skills?

What happened to: "Circuit boards are fragile and expensive. I only change the parts that are bad."?

Don't let this clown within twenty miles of your machines!

 :laugh2:
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Q*Bert_OP

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Re: Fuse questions
« Reply #3 on: October 15, 2010, 10:55:18 pm »
A 22 cal bullet also works as a fuse...it'll also tell you when it blows...  :duckhunt
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lilshawn

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Re: Fuse questions
« Reply #4 on: December 04, 2010, 09:32:31 pm »
Quote from: pinballjim on October 16, 2010, 11:17:34 pm


Thought you guys might enjoy the other use I've found for soldering irons - ground pin modification on extension cords.



*faint*

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Q*Bert_OP

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Re: Fuse questions
« Reply #5 on: December 04, 2010, 09:57:53 pm »
Quote from: pinballjim on October 16, 2010, 11:17:34 pm


Thought you guys might enjoy the other use I've found for soldering irons - ground pin modification on extension cords.



What? I just use a pair of pliers  :afro:
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Q*Bert_OP

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Re: Fuse questions
« Reply #6 on: December 04, 2010, 10:51:48 pm »
Quote from: pinballjim on December 04, 2010, 10:45:52 pm
Yeah, but then you ruin the line cord.

Uhh huh...

I also keep WD-40, spray contact cleaner, aluminum foil, lamp cord, and 22 cal bullets in my tool box  :lame:
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ChadTower

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Re: Fuse questions
« Reply #7 on: December 06, 2010, 09:18:19 am »
Quote from: pinballjim on December 04, 2010, 10:45:52 pm
Yeah, but then you ruin the line cord.

Joke was on me with this one recently... used this extension cord for Sharpshooter and could feel the voltage surging through me when I was barefoot and touched the side rails.  Problem went away when I switched to a proper cord.   :P


Concrete floor?  I've done that too on games where the ground prong had been cut off.  Or when touching the siderails for adjacent games and one has no ground prong.

My two cents on the original question is that you can do it but don't be surprised if it blows the FB fuse right away even if there is no problem.  It's just as likely to cause you to chase a phantom problem as it is to help you in the pinch.  A lot of people use circuit breakers when chasing a problem.  I have done it a couple of times but found they trip too slowly to replace a fast blow fuse.  I was able to go down in amp rating to make up for that but then I was never confident that I hadn't underrated the breaker.  Now I only use them for slow blow debugging.
« Last Edit: December 06, 2010, 09:25:28 am by ChadTower »
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