0 ohm resistor?

[DryRoasted]

I bought a bulk pack of resistors a while ago and got these thrown in....



Now, I know I'm not the worlds greatest electronics genius but what are 0 ohm resistors used for?

[Seljer]

Instead of jumpers, as its easier for a machine to place them than it is for it to place a peice of wire

[danjf]

That's very cool. I've never heard of it, and it would have taken me a long time to figure out the reason for a 0 ohm resistor to exist - if ever.  -- Dan

[sta63bmx]

Are they really marked 0 ohm? lol  I have used precision Vishay-Dale 0.05 and 0.02 ohm resistors before as sense resistors, where you just want to accurately measure current somewhere without perturbing the circuit or dissipating a lot of power as heat.  I had to use smaller ones so I could get higher current with an injector driver using an LM1949 chip.  It's a great little chip for driving inductive loads.  You just need an outboard N channel darlington and probably a big zener to protect the transistor against inductive flyback.

Sounds like a metric crescent wrench if you ask me!   We had a tech from Oxford Lasers in our lab once and he had a little toolkit brought from the UK with him, and his little crescent wrench had a metric scale marked on the jaws!  It was the closest thing to a metric crescent wrench I've ever seen, and I laughed for days.

[bancika]

That's cool, as useful as 0 inch sized winkie...at least to me 

[Hal]

Are they really marked 0 ohm? lol 

Yup, just one black stripe. 

[Roobin]

I opened up a tuner once, and found place for a 0 ohm R, and it took a week to figure out what  one was.

[Torchy]

That's cool, as useful as 0 inch sized winkie...at least to me 

Think about it ...

99% of pcbs are assembled by robot. The robot fingers cant handle the fine wire for a jumper, so this way its just another component to place.
For DIY, it reduces the risk of the jumper shorting against another component.

[bancika]

I agree for robot stuff. For DIY, there isn't anything near in 99% situations, and when there is I just use isolated wire for jumper.

[grapefruit]

We used to use them even for hand assembled PCB's. Makes it much easier because you can just put a bunch of them through the component bender/cutter then you don't have to worry about bending them to the correct length. With double sided PCB's we rarely use them now.

Stew.

[markm]

0 uF Caps anyone? 

[DryRoasted]

Cool! thanks guys

[bancika]

0 uF Caps anyone? 

And 0V batteries

[gez]

I use SMD 0 ohm resistors for short jumps between traces.  Saves drilling.

[Ge_Whiz]

I have a friend who replaced all the 0 ohm resistors in his boutique pedal with bits of wire. The improvement in tone was amazing. I mean solid core - obviously, multi-stranded wouldn't work. I reckon -1 ohm resistors would give a bit more boost.

[R.G.]

I have a friend who replaced all the 0 ohm resistors in his boutique pedal with bits of wire. The improvement in tone was amazing. I mean solid core - obviously, multi-stranded wouldn't work. I reckon -1 ohm resistors would give a bit more boost.

There was supposed to be smiley with that, right? 

[bancika]

 

[PharaohAmps]

I always use CARBON-COMP zero ohm resistors.  More mojo that way.

Matt Farrow

[nelson]

I am currently rev eng a boutique pedal with a zero ohm resistor on the PCB.

[Paul Marossy]

I have a friend who replaced all the 0 ohm resistors in his boutique pedal with bits of wire. The improvement in tone was amazing. I mean solid core - obviously, multi-stranded wouldn't work. I reckon -1 ohm resistors would give a bit more boost.

Yeah, and if you use solid core silver wire, it'll be off the chart!