build or substitute for 630mA rated time delay fuse ?

Question

is there a way to build temporary fuse like substitute in the case of blown fuse and no local source to get them ?

what is blown are Time delay 630mA 250v fuse(s)

and i want the safety of a fusible link but without hassle of blowing lots of fuses

would a simple current limiting resistor appropriately chosen work ? or some simple circuit that detects current and adjusts resistance in place of the fuse ? thermistor , varistor etc .....

well, those are ideas that run through the couple of electronics neurons i have :)

lots of people here know better than i ....

help and ideas appreciated, robb

Tom Biasi · Accepted Answer

There is no better way in this case then to replace the fuse with the type intended for that device.

You didn't say what the device is, so perhaps you could "get by" with a 1 A. SB (slow blow) which are easy to find.

Tom

Jamie · Answer

If you're just testing, use an incandescent lamp.. one that is rated for the voltage and aprox current of the circuit. if there is a short, the lamp will absorb it and glow to normal brightness to indicate it. current will be greatly reduced since the element in the lamp increases resistance as it heats up.

Sjouke Burry · Answer

My emergency fuse? take a bit of stranded wire, get on thin wire out,and use it as fuse.

robb · Answer

"Jamie"  wrotein message news:tQ5Zi.49$P16.37@newsfe07.lga...circuit.normalsince theso Jamie,you are talking about using the formula like the P= IV  where ipick a Watts nd Volt rating for a given bulb such that gives methe anticipated Currentthink i'll try/test  that on another 5v regulator.thanks for help,robb

Phil Allison · Answer

"robb"** Buy a  630mA circuit breaker  -  fool.   Resets with a push button.......  Phil

robb · Answer

Thanks for advice Phil,robb

Jamie · Answer

Looking for shorts don't help when it keeps reseting....-- "I'm never wrong, once i thought i was, but was mistaken"Real Programmers Do things like this.

build or substitute for 630mA rated time delay fuse ?

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