Homebrew PCBs

I have seen pcb-trace fuses on a power supply PCB in a Tektronix 577 
curve tracer, which I think is from the '70s. So, this technique seems 
to be around for a while and to me it can makes sense for certain 
uncritical applications (e.g. tripping extremely unlikely and only for 
full shorts, delay time uncritical etc.... )

Derk



logicresearch wrote:
>  
> 
> Hi,
> 
> I have two photos at <http://www.logicresearch.co.nz/pcbfuse.html 
> <http://www.logicresearch.co.nz/pcbfuse.html>> of the pcb tracks being 
> used as a fuse.
> I've not seen this before, and I thought you might like to see how it 
> worked.
> Has anyone here got the maths on track widths and thickness for this?.
> 
> Daryl Mills
> LogicResearch
>