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E Draisma
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 Posted: 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.
Gnekker
Guest

Posted: 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
Watson A.Name - 'Watt Sun
Guest

Posted: 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.

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CFoley1064
Guest

Posted: 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

For questions of this type, use sci.electronics.basic. Thanks.
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