| Author | Views | Views Today | Rank | Comments |
| 203,339 | 8 |   |
234 |
| Author | Views | Views Today | Rank | Comments |
| 203,339 | 8 | |
234 |
| When working with electronics, you always need one basic thing; power. This power supply is great for powering all kinds of electronic projects. It produces a well filtered, variable 1.2-30 volts at 5 amps. It is easy to build and the parts are realitively easy to find. |
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Related Circuits |
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| why is it the power supply connect to the12volts positive and negative? why is it the output of power supply of 6amps is 15volts? | ||
| i am very pleased with the site | ||
| Hello. I appreciate your posting this design. A couple of years ago, I needed a power supply for my "G" Scale model railroad. 5 amps was more than sufficient. Since I don't havve electronic controls on my RR, I use blocks which implies that I would need at least two power packs. The model shop wanted about $400 for a dual setup so I decided to buld my own. I built two of the power supplies into one case. I used some ceramic heat sinks for the LM338K units and so far, they have not even seemed to get warm so I don't uise a fan. I just cut several 2" holes in the case and covered them with wire mesh to ventilate the units. That did the trick. The two supplies were built into a metal electrical box that is 12 X 8 X 4. I added a panel voltmeter and ammeter on eqch side with two large knobs for contorlling the 5K pots..I also have a fixed 12 VDC tap with a switch and a red LED on each side and on the fixed voltage switch to show when the power is on. The only issue that I ran into was the lower voltage. With 1.2 VDC on the minimum setting, the locomotives would tend do crawl when the power was turned on. I cured this with some large ceramic resistors across the outputs in each supply to lower the voltage to zero. They are outside of the case in the back. It's crude but it works and they hardly get warm. The units have bene working flawlessly ever since I finished it. Thanks again! | ||
| hi..i want to design a circuit of output110Vdc where the input ia 240Vac..can u send me the schematic | ||
| Can i ask for a favor m8? Can u send me the schematic diagram of a variable power supply with an output of 0-12V and 1A? I need it for our final project in school.. Thanks lot! Hoping for a positive response..;) By d way,the circuit above is great! | ||
| In note #1. at the end where you said I did, at first glance it looked like IDIOT ... LOL just a good laugh! | ||
| i trying to construct 1.2 -30 volts 5 amps power supply adaptor i need a substitution for 0.01uf disc capacitor | ||
| Hi there, i was wondering if i can make an power supply which can produce 400VA with +/- 18V on Output. I was searching for an toroidal transformer but that version is more expensive and difficult to find. Please I'm waiting for your answer. | ||
| can you display the formulas you to find the values of the components in the power supply circiuts? | ||
| hello there (:
could you help me find a dual output power supply +-15 volts schematics and name the different sub-sections that makeup the dc power supply .Also components are restricted to 15 kinds and not more than 16 ! equal or less than 15 (:
Please and thank you (: (Editor's notes: Try the "related circuits" section.) |
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