pingadude 0 Posted November 4, 2009 I want to Build a 12 camera power suply unit from scratch...Can anybody help me... Share this post Link to post Share on other sites
scorpion 0 Posted November 5, 2009 If you have to ask how to build it then are you qualified to do so? I think it is cheaper to buy one then to buy the parts individually, and to assemble it. If you want to do it as a hobby then see if you can pick, and choose from here: http://scorpiontheater.com/pstips.aspx Share this post Link to post Share on other sites
pingadude 0 Posted November 5, 2009 Maybe i worded my request wrong...Im just curious to see maybe on the net there's a parts list to build the power supply for the camera's. I have some knowledge...to purchase a power supply in my area is very expensive Thanks for the links you gave me...great reading Share this post Link to post Share on other sites
bpzle 0 Posted November 5, 2009 How is that you can find parts to build a power supply but the sum of all the parts is impractical and too expensive? Where do you live??? Share this post Link to post Share on other sites
bpzle 0 Posted November 5, 2009 I agree with scorpion. Power supplies are way cheaper to buy premade. Plus they come with a warranty. Share this post Link to post Share on other sites
Soundy 1 Posted November 5, 2009 Not to mention, if it needs to be inspected or have something like UL-approval, you'll never get that on a DIY. But to answer the original question: what sort of power supply do you need? 12VDC or 24VAC? Multiple fused outputs, or no? Space-conscious? What sort of current capability? Share this post Link to post Share on other sites
scorpion 0 Posted November 5, 2009 (edited) Lets build a big 12 volt power supply! First a transformer http://www.grainger.com/Grainger/items/1YUW1?Pid=search resistor http://theelectrostore.com/shopsite_sc/store/html/resistor-100-watt-100-ohm-dale-rh-100.html diodes to make a bridge http://www.directindustry.com/prod/littelfuse/zener-diode-17136-134763.html 2N3792 http://www.wellgainelectronics.com/motorola2n3739.aspx 2N3716 http://www.wellgainelectronics.com/sml2n3716.aspx capacitor 2 farad 24 volt http://salestores.com/splcp20d.html Now lets do some welding! Edited November 5, 2009 by Guest Share this post Link to post Share on other sites
bpzle 0 Posted November 5, 2009 Lets build a big 12 volt power supply! First a resistor! http://theelectrostore.com/shopsite_sc/store/html/resistor-100-watt-100-ohm-dale-rh-100.html Some diodes to make a bridge http://www.directindustry.com/prod/littelfuse/zener-diode-17136-134763.html 3739 http://www.wellgainelectronics.com/motorola2n3739.aspx 3716 http://www.wellgainelectronics.com/sml2n3716.aspx Now lets do some welding! LOL, nerd! Don't you mean soldering? Share this post Link to post Share on other sites
scorpion 0 Posted November 5, 2009 the transistors are 10 amp 80 volt 150 watts. Short the 12 volt leads, and you are going to get a nice little spark! Game: Pull the wires apart before they weld, but keep the arc going! Share this post Link to post Share on other sites
cglaeser 0 Posted November 5, 2009 What is your budget? Multi-camera power supplies in a can with terminal strips, fuses, etc, are dirt cheap. Best, Christopher Share this post Link to post Share on other sites
vin2install 0 Posted November 5, 2009 Easy to build your own no need to be qualified. Parts needed: 1. 12vdc or 24vac transformer (>3A) since you will be splitting them $5.00-10.00 2. Metal Equipment Enclosure $5.00 3. Power Distribution Board $5.00-10.00 Share this post Link to post Share on other sites
cglaeser 0 Posted November 5, 2009 Easy to build your own no need to be qualified.Parts needed: No fuses? I love the smell of a burnin' cameras in the mornin'. Best, Christopher Share this post Link to post Share on other sites
hardwired 0 Posted November 5, 2009 Easy to build your own no need to be qualified.Parts needed: No fuses? I love the smell of a burnin' cameras in the mornin'. Best, Christopher You should see what happens when someone puts tinfoil around the fuse in a Pelco monitor Scorpion, what the heck are you trying to make with Zener diodes, Bipolar transistors, and no transformer or fusing, an electric chair? That's the offline switcher from Hell! Share this post Link to post Share on other sites
scorpion 0 Posted November 5, 2009 I could not find a picture of a giant 24 volt transformer! The two transistors are from an X Y monitor such as Tempest, and Star Wars. http://www.kronjaeger.com/hv-old/hv/do/sparks/index.html Share this post Link to post Share on other sites
Squiffy 0 Posted November 8, 2009 I personally would recommend buying a PC ATX PSU and modifying that for your use. Plenty of current at 12V, if that's your requirement. You just need to connect two wires together for it to power up, there are plenty of articles around giving advice: http://www.instructables.com/id/ATX--%3E-Lab-Bench-Power-Supply-Conversion/ http://www.instructables.com/id/Yet-Another-ATX--Lab-Bench-Power-Supply-Conversion/ Share this post Link to post Share on other sites
dvrtiger 0 Posted November 12, 2009 Yes, I agree, convert an ATX power supply, it's dirty, cheep and straightforward for DIY. It will provide 10-12 amps of clean and stable 12VDC. But, I wouldn't recommend it if you don't absolutely know what you are doing! It's a switching power supply in flyback configuration which can get you fried as a steak! Share this post Link to post Share on other sites
