ic query

[arsal_uet]

is there any ic which can give me a constant level of voltage even two volts or in other words is ther any ic which give a regulated DC voltage of 2 or 1.7 volts volts for the varrying 1.23 to 1.5 volts.

 

[mvs sarma]

Hi,

if it is fast varrying, try a votage doubler with germanium diodes like OA79, etc, the output can be clamped by three silicon diodes to fgive you around 3XVf of the diodes. this provided the variation is equal at MIN and MX.

otherwiase try MAX1724. it is said of capable of working from 0.8V. Datasheet at


http://datasheets.maxim-ic.com/en/ds/MAX1722-MAX1724.pdf

 

[arsal_uet]

but how can i get a constant dc level of 5 volts.

 

[mvs sarma]

Hi,
when you get a rectified dc, though varrying, the DC content is taken by the ic and the variation is treated as source or supply variation. still the control loop of the ic should give you a regulated o/p for obviously minimal load requirements.