piclist 2000\11\04\110806a >
Thread: switchmode rs232 line-powered power supply?
face BY : Dan Michaels email (remove spam text)

BillW wrote:
>Surely with all of the specialized switching power supply chips out there,
>at least ONE of the manufactureds (or SOMEONE) has designed a switching
>power supply designed to get as much 3.3V or 5V current as possible
>"parasitically" from an rs232 port?  Does anyone know of such a design?

Not me, so instead I use the 766x series chips. 8-pins, 2 caps, and
up to 100 mA "non-parasitic" current available. You can find 7660 and
7662 at Mouser for $0.50-0.80US range. [just be sure to use a gnd plane
under the chip].

- Dan Michaels
Oricom Technologies

http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


See also: www.piclist.com/techref/io/serials.htm?key=rs232
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) switchmode rs232 line-powered power supply?

month overview.

new search...