newbie please help design a stabilized dc power supply

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gazzam

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hi all
new to this forum and would apreciate some help. i have been asked to design a stabilized dc power supply with the following specifications

output voltages 9V and 12V
rated maximum output current 1A
output current under short curcuit load <3A
output ripple voltage <10mV
input voltage 240V +-10% @ 50Hz
stability <4%
regulation <0.1
internal resistance <1 ohm

thanks
 

Hi,
Switcher or traditional?
K.

Added after 8 minutes:

As tradi: LM340+ one Transistor_3-5A regulator with your specs. L200 from ST has alone 2A capabilities, but not so precise regulated in worst case...
LM2576 >> 0..30V & 0-..3A regulated pwr-supply was at Edaboard parallel topic a subject too...


do not upload any file that is already available online and for free, give the link to the file only ..... MOD Aya2002


www.national.com/an/AN/AN-103.pdf
 

thanks for the quick reply
traditional would be great thanks
 

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