tag:blogger.com,1999:blog-6615160292280278140.post3972386772029240021..comments2024-03-28T08:07:01.529-04:00Comments on Hands On - Make: Electronics: Chapter 3 - Exercise 15 Part 5James Floyd Kelly (Jim)http://www.blogger.com/profile/13876934942928389738noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6615160292280278140.post-54439827926121061712010-02-07T16:07:33.755-05:002010-02-07T16:07:33.755-05:00Charles,
Yes, the alarm box has been a very fun p...Charles,<br /><br />Yes, the alarm box has been a very fun project... and I'm not even done yet!<br /><br />I probably should have guessed that those low value resistors would allow a lot more current through that might damage the transistor... one was damaged, the other not... I b had to switch out both, one at a time, to see if they both were working... just lucked out that I didn't damage more of the circuit, I guess.<br /><br />Congrats on the 2nd Edition!! I just wish I was further along - but maybe some of my readers are ahead of me and can speak up if they've encountered any errors from Experiment 16 and up? If you've found some, please submit them to the errata page at:<br /><br />http://oreilly.com/catalog/errata.csp?isbn=9780596153748&print=yes<br /><br />JimJames Floyd Kelly (Jim)https://www.blogger.com/profile/13876934942928389738noreply@blogger.comtag:blogger.com,1999:blog-6615160292280278140.post-76213886365057870762010-02-07T15:59:40.224-05:002010-02-07T15:59:40.224-05:00Hey James, I'm guessing that you may have blow...Hey James, I'm guessing that you may have blown the first transistor with excessive current when you used 470-ohm resistors. One thing leads to another!<br /><br />I am very excited that you have tackled the alarm project, which I regard as fairly challenging, with numerous opportunities for error. Thanks so much for sharing your process.<br /><br />I am also excited that my book is already going into a second edition. This will enable me to correct all the errata that people have reported, so, if you have any more, now's the time.Charles Platthttps://www.blogger.com/profile/00968751199924367578noreply@blogger.com