Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 3
Bill_Jaffa
User Rank
Blogger
Re: Stories versus wires
Bill_Jaffa   4/7/2014 1:19:21 PM
NO RATINGS
Sometimes it is both more than OK  and actually a smart thing to use an "uncool" technique; otherwise, you risk the solution being more complicated than the problem!

MeasurementBlues
User Rank
Blogger
Re: Stories versus wires
MeasurementBlues   4/7/2014 1:10:02 PM
NO RATINGS
I wrote about the whole thing in some deatil a while ago.

See Multimeter traces home wiring.

Using a multimeter is so uncool. Today, You've need to do the same thing using a phone app as a TDR.

Bill_Jaffa
User Rank
Blogger
Re: Stories versus wires
Bill_Jaffa   4/7/2014 12:50:08 PM
NO RATINGS
Sounds like you should go Kickstarter and get some up-front funding to make it into a small prject, then get some distributor of building-wiring products to carry it!

MeasurementBlues
User Rank
Blogger
Stories versus wires
MeasurementBlues   4/7/2014 12:45:02 PM
NO RATINGS
"The one-wire continuity problem was one I had faced in the past, when I was helping a friend fixing up a very old two-story house."

Two story, one wire, but I ahve three stories. Does that mean I have two wires? Actually, I have 12 Ethernet lines with eight wires each. To locate and document the connections, I used a DMM after making a test cable that shorted the two middle wires together. Then I just had to run around with the sorting cable to each Ethernet jack and listen for hte beep in the wiring closer where all Ehternet lines come out of the wall.

Bill_Jaffa
User Rank
Blogger
Re: Audible continuity checkers
Bill_Jaffa   4/7/2014 12:26:34 PM
NO RATINGS
Good point--as usual, it's a good idea to stop and think first, decide if you need a basic short vs open test, or something a little more sophisticated.

MeasurementBlues
User Rank
Blogger
Audible continuity checkers
MeasurementBlues   4/7/2014 12:14:53 PM
NO RATINGS
Those DMMs with audible continuity testers will sound when the resistance measured is below some threshhold, but not always that close to zero ohms. In same cases, you get the beep but the resistance is still too high for things to work.

<<   <   Page 3 / 3


Most Recent Comments
MeasurementBlues
 
Max The Magnificent
 
Max The Magnificent
 
Bill.Choi
 
Bill.Choi
 
Bill.Choi
 
alex_m1
 
dt_hayden
 
mhrackin
Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Want a Voltera Desktop PCB Printer?
Max Maxfield
4 comments
I just received an email from my chum Javi in Spain. "Have you heard about Voltera (VolteraInc.com)? It's a Canadian company that is going to offer desktop-size PCB printers for fast ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Martin Rowe

Book Review: Controlling Radiated Emissions by Design
Martin Rowe
1 Comment
Controlling Radiated Emissions by Design, Third Edition, by Michel Mardiguian. Contributions by Donald L. Sweeney and Roger Swanberg. List price: $89.99 (e-book), $119 (hardcover).

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...