0-30V Stabilized Power Supply

[audioguru]

Nand, are you blind?

[carlos206]

The answer is
Supply1_              _Supply2_                     
|                  |          |                  |           
|                  |          |                  |           
|                  |          |                  |           
|_+____- __|          | __+__-__ |       
    |         |__________ |     |             
    |                 |               |                   
    |                 |               |                 
    |_Voltage?___|_Voltage?_|               
Good luck!   

[nand]

if I Connect + with -  the Cicuit ist shorted ? thx for all info now i will build 4 Supply...

[Hero999]

How can it possibly be shorted when it's clearly open circuit?

If you need to ask such questions then you obviously don't have enough experience to build it.

I suggest you read more about basic circuit theory and Ohm's law and basic before building this project..

[nand]

last question....

[carlos206]

Hi can I use the op amp LF355 instead MC34071 or TLE2141? i saw that Vcc max is 44. thx

[audioguru]

Hi can I use the op amp LF355 instead MC34071 or TLE2141? i saw that Vcc max is 44. thx

The National Semi LM355 is obsolete and has not been made for 11 years. Its max allowed supply was only 36V but was 44v for the more expensive LF155.

They will not work in the latest circuit because their input common-mode range does not go as low as the MC34071 or the TLE2141. The LF355 is almost the same as a TL081.

[Hero999]

last question....

What do you think?

The circuit will obviously work as long as you're aware that the supplies on the right will not be isolated from each other and if you don't know what that means then I suggest you do some more research before building it.

[nand]

hmmmm...

you think i`m arent allowed to connect the the 2 GND signals on the right side when i use the left side in series connection
right ?