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The wheelchair siren

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

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ReneCardenas
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re: The wheelchair siren
ReneCardenas   9/30/2011 4:49:16 AM
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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
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re: The wheelchair siren
Sanjib.A   8/21/2011 8:05:54 AM
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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
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re: The wheelchair siren
agk   8/20/2011 7:33:18 AM
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That is good idea and design. Now it can be done with simple piezeo buzzer.

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