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Author Topic: Drawback of using Resistors wires as Jumpers!!!  (Read 453 times)
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Khalid
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« on: September 04, 2011, 06:46:24 am »
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Dear Friends,
I have a question. Normally we used 1/4 watt resistors. We solder the resistors on the circuit and trim-off the excessive length of wire. Normally i make single-sided PCB and i have to install jumper wires.My question is can we use these trimmed resistors wires as a bridge/jumper in a circuit? Is it a good practice?
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Khalid
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jackrae
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« Reply #1 on: September 04, 2011, 07:22:39 am »
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Yes of course it is.  These wires are tinned copper and therefore ideal for use as jumpers
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Graynomad
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« Reply #2 on: September 04, 2011, 09:42:27 am »
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That's just fine, don't even cut them off, just bend to the place they have to be if they'll reach.

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Jack Christensen
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« Reply #3 on: September 04, 2011, 09:56:48 am »
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I've used them as well, I'm sure it's OK, but curiously I've noticed that a lot of component leads are magnetic, so not sure what they're made of exactly, but some are more than just tinned copper.
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« Reply #4 on: September 04, 2011, 01:04:45 pm »
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They are probably nickel plated steel and not really recommended for jumpers. 
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Grumpy_Mike
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« Reply #5 on: September 04, 2011, 01:15:06 pm »
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Quote
not really recommended for jumpers. 
Why not? If the wire is good enough for the lead up to a component it is good enough for a link. I have been doing this for over 40 years and have not come across any problems at all.
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retrolefty
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« Reply #6 on: September 04, 2011, 01:44:27 pm »
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Quote from: Grumpy_Mike on September 04, 2011, 01:15:06 pm
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not really recommended for jumpers.  
Why not? If the wire is good enough for the lead up to a component it is good enough for a link. I have been doing this for over 40 years and have not come across any problems at all.

How's that for bulletproof logic.  smiley-wink

PS: I just tested a 47k ohm resistor that was laying on my desk. No magnetic attraction at all. Suspect it's just tin plated copper wire.
« Last Edit: September 04, 2011, 01:48:27 pm by retrolefty » Logged

Bobnova
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« Reply #7 on: September 04, 2011, 02:01:11 pm »
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Most of my resistor/capacitor/diode wires are magnetic, though not all.

They make wonderful jumpers regardless.
Obviously using the wire off a 1/8w resistor for the main power feed to something that wants multiple amps won't work out well, but that's fairly obvious I think.
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MarkT
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« Reply #8 on: September 05, 2011, 06:41:06 am »
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Using steel would only be an issue with high currents - its resistance is higher than copper, but of course all metals are good conductors compared to a resistor.  Steel is used because it is cheaper than copper.
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