Backlight Power Measurement

Paul Fertser fercerpav at
Wed Oct 28 09:16:52 CET 2009

Aaron Carroll <xaaronc at> writes:
> 2009/10/20 Aaron Carroll <xaaronc at>:
>> Based on the heating I've noted in L1704, I've ordered some low-R
>> inductors to see if that has much effect.
> I replaced L1704 with a TDK VLF3012AT @ 2.2uH (data sheet:
> and repeated the
> experiments.  With this new part the efficiency of the conversion
> jumped to 80%  :-)

Just "wow" :)

Seriously, Aaron, great thanks for your investigation and
persistence. The result is something we all can learn from:

1. Don't be as insane as (some) TPE EEs ;)
2. When choosing a part think of what purpose you're going to employ
it for.


Be free, use free ( software!
mailto:fercerpav at

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