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symmetric +-30V 10A linear adjustable PS with 723

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wolfentine

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lm317 lm337 3055 2955

hi!
any1 can "mirroring" a schematic diagram (initial made for positive but i want to build a symmetric PS with 723) for me?

"mirroring", here, =make negative regulated part of the PS with same configuration and complementary electronic parts :) (eq 3055>---2955 etc) :)))

10x!
 

lm337 2955

Use LM337 with additional transistors
 

Sorry,No. if i use 337 for negative section why wouldn't I use 317 for positive.
More points of view?
 

i almost found it, but it need to be boosted and add adjusting current pot's
 

need idea to make this to be constant current source (for constant current charging method)
 

hi
ur circuit seems like dual output voltage regulator...but there is no feedback form
the final point to regulation circuit .... and there is no short circuit protection...
u drive the base of 3 parallel 2N3055 with 1N4148 its just small signal diode..
i dont no why use 3 diode in serial may be to cancel 1.25V for lm317
...and that resistor 27/1w .. u use here 10000uf its big value for power supply
work with batt
i prefer to use LM338 adjustable from 1.2v to 32v with 5A
**broken link removed**
 

* sorry, wrong drawing, 4148s are 4001 i want to be. They are for start from 0V not from 1.25V
* yes, is no feedback
* short-circuit protection may wait (if i use it carefully)
* yes, 338 is better than 317 (even 317+3055 here)


but i have this "source" and i want to modify for 2 functions (manual switchable): constant voltage/current
 

Green for constant voltage
For constant current I must dig much more
 

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