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regulated DC power supply

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fluffy13

New Member
hello... anyone who can help me design a regulated DC power supply that will supply 3, 5, 6, 7.5, 9 and 12?
 

crutschow

Well-Known Member
Most Helpful Member
How much current at each voltage?
 

tcmtech

Banned
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Check out the specs sheets on a LM317 adjustable voltage regulator.
Or any other adjustable type regular. There are switching types too that have higher operating efficiencies as well but doe take more parts and are harder to build.
 

microtexan

New Member
Regulated power supply

At the top of this page is "link" to search this form. A search for "regulated power supply" produces over 100 results. A little work on your own goes a long way.:(
 

mneary

New Member
See the LM317 data sheet. From there, it's mostly a mechanical design.

All you have to do is design one power supply using an adjustable regulator and get it working. Then build five more to fit in the same box with different calculated outputs and you're done. It's up to you whether to share one transformer or use several. The biggest decision you'll have to make is whether you want all of the (-) terminals to be common, or not.
 

tcmtech

Banned
Most Helpful Member
Ah! another class project! I should have guessed.
 

fluffy13

New Member
Ah! another class project! I should have guessed.
yah! class project.. haha.. we already have our circuit design. we also tried to build a power supply. we just don't know why 2 of the LEDs aren't working. and if we measure the voltage output at each, it remains constant. voltage output should change from 3 then 5 then etc...
 

tcmtech

Banned
Most Helpful Member
Only if you are actualy going to power something with it. Other wise its just theoretical.
 
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