[sdiy] Typical load for 9V alkaline batteries?

[Gur Milstein]

Hi

A few years ago i had desgin a UPS for use with 3U CompactPCI systems to 
allow planned shutdown of a processor during a power loss situation , it is 
capable of 85Watts above 18V for 2 minutes .
and can be seen at  http://www.tenta.com/
anyway i remind this as i remmber that the Horowitz/Hill  book was a major 
help for me to get in to Batterys and chargers which i did not aknow any 
thing about before  , finding the right Battery and charger to achieve that 
was not easy but i defiantly find Horowitz/Hill  as a good data source to 
start from and to chose between deferent approach to the desgin .
but it is also 100% true that HH miss a more deep explanations and 
mathematics on some part of the subject , but i think that the overall  idea 
of this book (IMHO) is to be used like a hand-book in design stage and not 
as a perfect data source for all applications .


Cheers
Gur Milstein

ANALOGIC Analog Control System

www.analogic-acs.com





>From: René Schmitz <uzs159 at uni-bonn.de>
>To: Paul Schreiber <synth1 at airmail.net>
>CC: Glen <mclilith at charter.net>, synth-diy at dropmix.xs4all.nl
>Subject: Re: [sdiy] Typical load for 9V alkaline batteries?
>Date: Thu, 05 Jun 2003 12:45:24 +0200
>
>
>
>Paul Schreiber wrote:
>>In Horowitz/Hill they state 400mAh @ 1mA and 180mAh @ 10mA for a "heavy
>>duty" 9V zinc carbon battery, 500mAh @ 1mA and 470mAh @ 10mA for an
>>alkaline 9V battery.
>
>Well the figure for the alkaline seems to be consistent with the datasheet 
>for the "Duracell" 9V blocks.
>
>http://www.produktinfo.conrad.com/datenblaetter/650000-674999/650341-da-01-en-duracell_plus_block_9v.pdf
>
>Anything else but misleading.
>
>>I'm sure that I'm in the minority here, but that H&H book is *full* of 
>>wrong, misleading, and
>>wierd garbage. It's like it was edited by junior EE students, randomly 
>>grabbing stuff off the
>>web. I know many folks think it's a wonderful book, but I read the op amp 
>>chapter and about
>>barfed.
>
>Maybe you should have read the chapter on precision design then, there they 
>deal with the nonideal behaviour of opamps. I know that the coverage might 
>not be complete, but at least your statement that they merely cover 
>idealized opamps isn't true.
>
>Cheers,
>  René
>
>--
>uzs159 at uni-bonn.de
>http://www.uni-bonn.de/~uzs159
>
>
>

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