J
John Popelish
Guest
Dave.H wrote:
filtering, but if you want to try regulation, you need a
unit that is rated for the full supply across the regulator,
like the TL783 (less than $2 from Digikey).
http://focus.ti.com/lit/ds/symlink/tl783.pdf
Keep in mind that you have to start with a supply that stays
at least 2 volts above the regulated output, even at the
bottom of the ripple and at low line voltage, so you will
need a significant extra voltage at the input supply.
--
Regards,
John Popelish
I suspect you might be able to get by with sufficient
filtering, but if you want to try regulation, you need a
unit that is rated for the full supply across the regulator,
like the TL783 (less than $2 from Digikey).
http://focus.ti.com/lit/ds/symlink/tl783.pdf
Keep in mind that you have to start with a supply that stays
at least 2 volts above the regulated output, even at the
bottom of the ripple and at low line voltage, so you will
need a significant extra voltage at the input supply.
--
Regards,
John Popelish