W
Watson A.Name - "Watt Sun
Guest
Single Alkaline Battery Drives White LED ED, Oct 27, 03
http://www.elecdesign.com/Articles/Index.cfm?ArticleID=5886
I like this circuit. :-] It uses those wimpy 2N3904s, which can't
handle even 200 mA, and they expect it to drive a LED and suck over 40
mA from the battery. Gimme a break. Let's get a _real_ transistor in
there, a 2N4401, or better, a BC338.
See http://www.belza.cz/ledlight/ledm.htm for similar circuits.
Oops, says not found. Weird.
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###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
http://www.elecdesign.com/Articles/Index.cfm?ArticleID=5886
I like this circuit. :-] It uses those wimpy 2N3904s, which can't
handle even 200 mA, and they expect it to drive a LED and suck over 40
mA from the battery. Gimme a break. Let's get a _real_ transistor in
there, a 2N4401, or better, a BC338.
See http://www.belza.cz/ledlight/ledm.htm for similar circuits.
Oops, says not found. Weird.
--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@