Re: How to use an inductive probe?

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

because if its a closed loop the tone drops out...its how you can tell if
you have a short.
use the red to one side of the loop you're trying to trace and the black to
a good ground and you'll get the best tone.
not sure if you can do this with power on the circuit...I forget.


"Bob La Londe" <usenet@xxxxxxxxxxxxxxxx> wrote in message
news:5vydnfHbuKxRg1XeRVn-ig@xxxxxxxxxxxxxxx
| "Chet" <mehta.chet@xxxxxxxxx> wrote in message
| news:1137088252.425465.315240@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| > Our door bell stopped working a few months back and I've been trying to
| > figure out what might be wrong. The doorbell button has a built-in
| > light which is off now. I replaced it with a new button and the new
| > button doesn't light either. That led me to check the voltages at the
| > doorbell unit and it has no power.
| >
| > I understand that doorbells run at a lower voltage which is achieved
| > via a step-down transformer. My problem is that I can't seem to locate
| > the transformer. I checked at the obvious places (near the furnace,
| > near the fuse box, behind the doorbell chimes) but haven't found it
| > yet. My next option is to trace the wires from the doorbell using an
| > inductive probe.
| >
| > I obtained a Progressive Electronics Model 700C kit which include the
| > 200EP Inductive Amplifier and Tracer 2 Model 77HP tone generator.
| > Unfortunately I can't locate the instructions to use the unit. I see
| > the Tracer 2 tone generator has two alligator clips (black & red). Do I
| > just connect one (red?) of these to the wire that's supposed to come
| > from the transformer to the door bell, set the switch to "Tone" and
| > then use the inductive probe to follow the wire or do both wires need
| > to be connected?
| >
| > Appreciate instructions or suggestions you might have. Thx!
| >
| > :Chet.
|
| I tried once to located a transformer for a door bell with a toner and
| probe, and then with a cable locator.  I never did find it.  One trick I
| have learned since then is sometimes you can locate a wire of a pair
easier
| if you just connect one lead instead of both.  Not sure why, but it works
| sometimes.
|
|
| --
| Bob La Londe
| www.YumaBassMan.com
|
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