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
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)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Vetinari Clock: Decisions, Decisions, Decisions …
Max Maxfield
22 comments
Things are bouncing merrily along with regard to my uber-cool Vetinari Clock project. The wooden cabinet is being handcrafted by my chum Bob (a master carpenter) using an amazing ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...