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Re: [Phys-l] Step down transformer trouble


I haven't had the chance to dig any more. I've gotten busy with dadding.
I did check th output voltage on both transformers. While both are listed as 16V ax transformers, they each provide roughly 20.1V when the bell is not being rung. I haven't been able to coordinate a bell ringing with my dmm in place.
I need to reattach the bell to the supposedly nonfunctioning transformer to see if it is working again or not.
Haven't had the chance to check voltage of the original junction box.

Paul Lulai
Physics Teacher
St Anthony Village Senior High
3303 33rd Ave
St Anthony Village MN 55418

(w) 612-706-1146




----- Reply message -----
From: "Dan L. MacIsaac" <danmacisaac@mac.com>
Date: Thu, Jul 7, 2011 10:14 pm
Subject: [Phys-l] Step down transformer trouble
To: "betwys1@sbcglobal.net" <betwys1@sbcglobal.net>, "Forum for Physics Educators" <phys-l@carnot.physics.buffalo.edu>

Yup. Don't trust the color of insulation or lack thereof in household circuits -- check with a multimeter. Verify grounds.

Uncle Fred does lots of household wiring. Some works a bit, some never does and some will kill you.

Dan M


On Jul 7, 2011, at 8:09 PM, brian whatcott wrote:

On 7/6/2011 3:50 PM, Paul Lulai wrote:
...I plugged the transformer into the extension cord. I then plugged the cord into a separate outlet. It works.
Dan MacIsaac might be right (i dread). ...
Paul Lulai

I seem to have lost Dan's contribution.
Or perhaps it was offered privately.
(Why would a list owner do that? :-)
Do share the dire prediction - the possibility of miswiring maybe?

Regards

Brian W
_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l

_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l