[Build] tracing technique

[Michael Wright]

Hi Rachel,

Here's my thoughts on making a battery tracer thingy.

There's also a bag with a couple of multi-meters and a bunch of test  
jumpers.

The simplest parallelizable tracing technique would be to pick up a  
bunch of 9v batteries, and have each wire tracing person have a  
voltage to look for
Circuit 1   9V
Circuit 2   18V (2 batteries in series)
Circuit 3   27V (3 batteries in series)
Circuit 4   36V (4 batteries in series)

I'd recommend not going over 60V (shock hazard).  One could get fairly  
complicated with it (led's, etc) but it's probably not worth doing.

Hook up procedure:

1) test circuit is not shorted with ohm meter
2) hook up voltage
3) find voltage and label circuit.

The power source would be 4 9v batteries, wired such that there's 1  
ground (hook to box ground, and 4 outputs (9, 18, 27, 36)
Parts:
Radio Shack 9V Battery clips  $3
4 9V batteries

mike

On Aug 27, 2009, at 11:18 AM, Rachel McConnell wrote:

> Dr. Jesus wrote:
>> On Thu, Aug 27, 2009 at 10:49 AM, Ben Kochie<ben at nerp.net> wrote:
>>> I have a tone and probe set, can bring it.
>>
>> There's a tone generator by itself that someone lent me, but it needs
>> a 9V battery.
>
> Is it at 2169 or where?  We can probably locate a battery for it.
> _______________________________________________
> Noisebridge-discuss mailing list
> Noisebridge-discuss at lists.noisebridge.net
> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss