Embedded Systems Conference
Breaking News
Blog

The wheelchair siren

David Bley
8/17/2011 05:17 PM EDT

 4 comments   post a comment
NO RATINGS
View Comments: Newest First | Oldest First | Threaded View
ReneCardenas
User Rank
Author
re: The wheelchair siren
ReneCardenas   9/30/2011 4:49:16 AM
NO RATINGS
Like this story, reminds me of my first electrical circuit, it was a high-voltage generator, using a battery and couple of transistors, it was an interesting challenge to hold on to thiose metal bars!

Sanjib.A
User Rank
Author
re: The wheelchair siren
Sanjib.A   8/21/2011 8:05:54 AM
NO RATINGS
That was one my first few circuits too. Much before I studied engineering, since my childhood I was passionate about building small electronic gadgets by referring to books/magazines which used to publish hobby circuits. Even though I did not fully understand how that circuit worked, I built that circuit with two transistors and a small speaker form an old radio. My friends and I had fun with that for some time.

agk
User Rank
Author
re: The wheelchair siren
agk   8/20/2011 7:33:18 AM
NO RATINGS
That is good idea and design. Now it can be done with simple piezeo buzzer.

More Blogs
One of the myths associated with IPv6 is that the impending depletion of the IPv4 address space is the only reason to adopt IPv6.
Attempts by network providers such as Alcatel-Lucent to replace the Plain Old Telephone Service with all-IP alternatives will continue to meet resistance.
Factory automation equipment has traditionally relied on dedicated network ASICs, but the platform approach is gaining ground.
By eliminating a file-based flow, new tools offer a complete RTL power exploration and accurate gate-level power analysis process.
Web 2.0 techniques are being successfully used to combat poverty in India.
Flash Poll
April 2015 Cartoon Caption Contest: The Mighty Hamster
April 2015 Cartoon Caption Contest: The Mighty Hamster
Of all the exhibits in the Pre-Apocalypse Era Museum, Breek was always in awe of the unearthed details and true-to-scale reproduction of a technological creation space that the long gone humans had once inhabited.
150 comments
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week