[sac-forum] Re: Red LED chart lamp

Thanks Steve... they are both yours!

Peter
  ----- Original Message ----- 
  From: Steve Coe 
  To: sac-forum@xxxxxxxxxxxxx 
  Sent: Sunday, November 26, 2006 6:19 PM
  Subject: [sac-forum] Re: Red LED chart lamp


  Peter;



  Knowing that Dave Fredericksen wanted one also, I will speak for him and take 
both.



  Thanks;

  Steve Coe



  -----Original Message-----
  From: sac-forum-bounce@xxxxxxxxxxxxx [mailto:sac-forum-bounce@xxxxxxxxxxxxx] 
On Behalf Of Peter Argenziano
  Sent: Sunday, November 26, 2006 6:14 PM
  To: SAC Forum
  Subject: [sac-forum] Red LED chart lamp



  Not sure if you've all seen my red LED table chart lamp at a star party, but 
have I got a deal for you do-it-yourselfers.



  I have just about enough parts (minus the batteries and one knob) to make two 
lamps. I thought I'd build a couple more, but haven't gotten around to it. So, 
I'd be willing to sell a couple of lamp kits for $20 each, including the 
sacrificial lamp. To see the design, visit Andrew Cooper's website: 
http://www.siowl.com/atm/redlamp/redlamp.html

  It's easy to build, given that you possess the ability to read a simple 
schematic diagram and can do some basic soldering.



  Included in the kit:

  1 - desk lamp

  4 - super ultrabright red LEDs (that's what they're called)

  1 - LM317 voltage regulator

  1 - 100uF 35v capacitor

  2 - 1N4001 diodes

  1 - 1k potentiometer

  1 - knob (only one kit will have the knob)

  1 - 10 ohm ¼ watt resistor

  1 - 220 ohm ¼ watt resistor

  1 - 560 ohm ¼ watt resistor

  1 - small perfboard

  1 - DC power jack



  You supply the power source of your choice. The kit will allow you to 
construct a 12-volt DC, 120-volt AC or combo lamp. I built mine as 12-volt 
only, since I only use it at star parties. For power I use a 5-Ah gel cell that 
cost about $20 and lasts around 100 hours at max brightness (a level never 
actually used) between recharges.





  Peter

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