From: Andrew Jamieson <andrew.jamieson_at_projectlab.net>
Date: Wed, 15 Jan 2003 09:12:56 +1100

This has been discussed, and I am going to post a switchmode USB powered
solution. I am not a big fan of charge-pump convertors as power rails.

Andrew Jamieson
----- Original Message -----
From: "Joaquim Carvalho" <jdc_at_x64.com>
To: <rockbox_at_cool.haxx.se>
Sent: Tuesday, January 14, 2003 11:57 PM
Subject: How can you stand carrying the power supply around?


> The first I'll do when I get the jukebox is a voltage doubler to charge
> the batteries from the USB cable.
>
> All easily available ingredients:
>
> 2 or 3 MAX660 voltage doublers (200 or 300mA output current)
> http://www.national.com/ds/MA/MAX660.pdf
> 88% efficiency
> 5.5V max
> 100mA each
> SO-8 package
>
> 3 or 4 150uF smd tantalum capacitors
>
> Any other suggestions?
>
>
>
Received on 2003-01-15