All About Circuits - Newsgroup Archive Forum Index All About Circuits - Newsgroup Archive
These forums contain an archive of usenet posts relating to electronics. These usenet posts are a great resource. Click the 'search' link to search for a topic, or browse through the posts.
 
Back To: please note - you cannot post on these forums. this is a usenet archive, new posts are not permitted. please visit our forums to create a new post
   SearchSearch 
How to build a 1.5 Volt power supply?

 
   All About Circuits - Newsgroup Archive Forum Index -> sci.electronics.design


Author Message
E Draisma
Guest





PostPosted: Mon Aug 25, 2003 2:46 pm    Post subject: How to build a 1.5 Volt power supply?

Hi there,

For an art project I need to build a small 1,5V power supply to power a
small MP3 player. (replace a 1,5V AA battery)
Available is 8-10V DC.

I know a little bit about electronics, enough to build a simple schematic.
However, I can't find a schematic to do this; maybe anyone of you knows how
to do it?

I would be very pleased if anyone could help me!

Eibert Draisma.
Back to top
Gnekker
Guest





PostPosted: Mon Aug 25, 2003 3:40 pm    Post subject: Re: How to build a 1.5 Volt power supply?

Quote:
Hi there,

For an art project I need to build a small 1,5V power supply to power a
small MP3 player. (replace a 1,5V AA battery)
Available is 8-10V DC.


Use LM317
Back to top
Watson A.Name - 'Watt Sun
Guest





PostPosted: Mon Aug 25, 2003 4:29 pm    Post subject: Re: How to build a 1.5 Volt power supply?

In article <3f49e83a$0$49102$e4fe514c@news.xs4all.nl>,
draisma1@xs4all.nl mentioned...
Quote:
Hi there,

For an art project I need to build a small 1,5V power supply to power a
small MP3 player. (replace a 1,5V AA battery)
Available is 8-10V DC.

I know a little bit about electronics, enough to build a simple schematic.
However, I can't find a schematic to do this; maybe anyone of you knows how
to do it?

Use the LM317 adjustable regulator. Connect two 470 ohm resistors in
parallel (235 ohms) from output pin to the adjust pin, and a 47 ohm
resistor from adjust pin to ground. Or use a 100 ohm trimmer pot
instead of the 47 ohm to give you some adjustment. With the pot, the
lowest you can go is 1.2VDC, and the highest less than 2V, maybe 1.8V.
If the current is high, then mount the LM317 to a heatsink.


Quote:
I would be very pleased if anyone could help me!

Eibert Draisma.


--
@@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@@
Back to top
CFoley1064
Guest





PostPosted: Tue Aug 26, 2003 8:18 pm    Post subject: Re: How to build a 1.5 Volt power supply?

Quote:
Hi there,

For an art project I need to build a small 1,5V power supply to power a
small MP3 player. (replace a 1,5V AA battery)
Available is 8-10V DC.

I know a little bit about electronics, enough to build a simple schematic.
However, I can't find a schematic to do this; maybe anyone of you knows how
to do it?

I would be very pleased if anyone could help me!

Eibert Draisma.


If the other suggestions haven't helped, you might want to go down to the local
Radio Shack and buy their catalog #273-1662,1.5-12VDC/300mA Regulated AC-to-DC
Adapter, for $14.99 USD.

For questions of this type, use sci.electronics.basic. Thanks.
Back to top
Display posts from previous:   
   All About Circuits - Newsgroup Archive Forum Index -> sci.electronics.design All times are GMT
Page 1 of 1

 
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


sitemap