Breaking News
Comments
Newest First | Oldest First | Threaded View
Caleb Kraft
User Rank
Blogger
Re: Safety?
Caleb Kraft   11/21/2013 5:21:37 PM
NO RATINGS
That is why these are so fun! You don't get to see high voltage on an arduino every day. At least, not without destroying it.

Stephen_M
User Rank
Freelancer
Safety?
Stephen_M   11/20/2013 8:44:18 PM
NO RATINGS
Adding a high voltage shield to a traditional low voltage product invites all kinds of issues.

The small relay's ratings are further obscured by putting them on a board that begs "go for it". Having used relays in the past for switching line voltage, there is no way I would buy one of these since the pedigree of the parts are fundamental to the quality of its future operation.

Do any of these project boards have Nationally Recognized Test Laboratory markings? It isn't mentioned and it should. Since it has line voltages on the board, shouldn't the board be manufactured to a higher level? One false move an it's all toast. Shouldn't the boards come pre-buttered?

In working with high voltages myself, it is very important to know that the traces have sufficient spacings for contamination, voltage separation, and current handling without overheating the PCB material.

While the projects are cool, working with those voltages on an open frame design is dangerous. The arcing shown for fun on the project page is closer to reality than you think.



Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Engineer's Bookshelf
Caleb Kraft

The Martian: A Delightful Exploration of Math, Mars & Feces
Caleb Kraft
3 comments
To say that Andy Weir's The Martian is an exploration of math, Mars, and feces is a slight simplification. I doubt that the author would have any complaints, though.

The Engineering Life - Around the Web
Caleb Kraft

Surprise TOQ Teardown at EELive!
Caleb Kraft
Post a comment
This year, for EELive! I had a little surprise that I was quite eager to share. Qualcom had given us a TOQ smart watch in order to award someone a prize. We were given complete freedom to ...

Design Contests & Competitions
Caleb Kraft

Join The Balancing Act With April's Caption Contest
Caleb Kraft
47 comments
Sometimes it can feel like you're really performing in the big tent when presenting your hardware. This month's caption contest exemplifies this wonderfully.

Engineering Investigations
Caleb Kraft

Frankenstein's Fix: The Winners Announced!
Caleb Kraft
8 comments
The Frankenstein's Fix contest for the Tektronix Scope has finally officially come to an end. We had an incredibly amusing live chat earlier today to announce the winners. However, we ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)