<br>A screw-in outlet sounds like the easiest solution.<br>But if you're working with low voltage stuff in the future, <br>you might want to just get one of these:<br><br>
http://www.mpja.com/prodinfo.asp?number=16220+SC<br>
<br><br>
<table class="readtext" border="0" cellpadding="1" cellspacing="7"><tbody><tr><td bgcolor="#789be0"><br></td><td>-------Original Message-------<br>
From: Jascha Narveson <jnarveson@wesleyan.edu><br>
Subject: Re: [dorkbotnyc-blabber] voltage differences: powering a 9-volt thing with a wall socket powered device<br>
Sent: 21 Dec '07 15:01<br>
<br>
</jnarveson@wesleyan.edu><div><br class="khtml-block-placeholder"></div><div>Ah ha! I didn't know screw-in outlets existed - these combined with a normal 9v-dc adaptor makes the whole thing suddenly pretty easy.</div><div><br class="khtml-block-placeholder"></div><div>thanks, all,</div><div><br class="khtml-block-placeholder"></div><div>jascha</div><div><br class="khtml-block-placeholder"></div><div><br class="khtml-block-placeholder"></div><div><br class="khtml-block-placeholder"></div><br><div><div>On Dec 21, 2007, at 9:52 AM, jeb boniakowski wrote:</div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"><blockquote type="cite">If its direct-wired to the lights, you could just unscrew the bulbs and put in one of those adapters that converts a normal incandescant bulb socket into a power outlet. that would probably be the easiest thing.<br><br>(oddly, my old roommate did a proj that involved doing this exact thing last year, and as you would expect there's some simple circuit in there that flips a relay to power the lights. For a variety of reasons, though, he said once you start taking it apart its actually much easier to just build a new circuit using the sensing element then to adapt the one in the box.) <br><br><div class="gmail_quote">On Dec 21, 2007 9:47 AM, douglas repetto <<a href="mailto:douglas@music.columbia.edu" target="_blank" mce_href="mailto:douglas@music.columbia.edu">douglas@music.columbia.edu</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <br>It's probably just a relay that's switching the 110v wall current on and<br>off when it detects motion. Check it with a voltage meter to be sure! If<br>it is, then you can simply plug in a 9v DC power transformer ("wall <br>wart", available at Radio Shack). That way when the sensor turns to<br>power on and off it'll be just like you plugging and unplugging the wall<br>wart from the wall.<br><br>What does the physical connection between the sensor and the lights look <br>like? If it's a 2 or 3 prong jack then just plug in the 9v DC<br>transformer as you would plug it into the wall. If it's directly wired<br>to the lights then you'll need to get a bit creative -- but be careful! <br>Wire it up with the sensor UNPLUGGED and make sure you understand what<br>you've done before you turn it on. You're dealing with 120v AC wall<br>current, and if you make a mistake you can get hurt! Maybe best to ask <br>someone who's done it before.<br><br>best,<br>douglas<br><div><div></div><div class="Wj3C7c"><br>Jascha Narveson wrote:<br>><br>> Hello, Dorkbot -<br>><br>> Quick question: i've got a 9-volt battery powered circuit which I want <br>> to power with an off-the-shelf<br>> turn-the-lights-on-when-the-bad-guy-gets-near-your-house motion sensor.<br>> The sensor runs off normal 110 AC power, and I'm not sure what kind of<br>> power it's feeding to the light bulbs, but it's higher than 9 volts. Is <br>> there an easy way to change the output of the sensor to safely power the<br>> circuit?<br>><br>> thanks,<br>><br>> jascha<br>> ........................................................................ <br>> .........dorkbot: people doing strange things with electricity..........<br>> ..........................http://dorkbot.org............................<br>> ........................................................................ <br><br></div></div><font color="#888888">--<br>............................................... <a href="http://artbots.org" mce_href="http://artbots.org" target="_blank">http://artbots.org</a><br>.....douglas.....irving........................ <a href="http://dorkbot.org" mce_href="http://dorkbot.org" target="_blank"> http://dorkbot.org</a><br>.......................... <a href="http://music.columbia.edu/cmc/music-dsp" mce_href="http://music.columbia.edu/cmc/music-dsp" target="_blank">http://music.columbia.edu/cmc/music-dsp</a><br>.......... repetto............. <a href="http://music.columbia.edu/organism" mce_href="http://music.columbia.edu/organism" target="_blank"> http://music.columbia.edu/organism</a><br>............................... <a href="http://music.columbia.edu/%7Edouglas" mce_href="http://music.columbia.edu/%7Edouglas" target="_blank">http://music.columbia.edu/~douglas</a><br></font><div><div></div><div class="Wj3C7c"> <br>........................................................................<br>.........dorkbot: people doing strange things with electricity..........<br>..........................http://dorkbot.org............................ <br>........................................................................<br></div></div></blockquote></div><br><div style="margin: 0px;">........................................................................</div><div style="margin: 0px;">.........dorkbot: people doing strange things with electricity..........</div><div style="margin: 0px;">..........................http://dorkbot.org............................</div><div style="margin: 0px;">........................................................................</div> </blockquote></div><br><hr style="height: 1px;" noshade="noshade">........................................................................<br>
.........dorkbot: people doing strange things with electricity..........<br>
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