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Technology Stocks : Qualcomm Incorporated (QCOM) -- Ignore unavailable to you. Want to Upgrade?


To: tech101 who wrote (70062)3/31/2000 1:13:00 AM
From: engineer  Read Replies (1) | Respond to of 152472
 
What is this about? the cellphone insides dropped tehcnology by a factor of 5 in area, which equates directly to power savings (since most power in ASICs is charging and discharging of capcitors and the area of these went down accordingly). A typical MSM draws something like 7-8 mW running full out compared to the 250-300 mW in 1995. The RF has also dropped power alot by as much or more of a power factor. Same for the Laptop, same for the Sony Camcorder, which also droped voltage by a 40% (from 3V down to 1.8V), which also equates directly to power savings, P=VI. the V part is the voltage drop, the I part is the pwoer to charge and discharge caps.

I think your statements are a little overblown. the smart power supply chips are fairly good, but they are not that good. And battery chemistry HAS gotten alot better, by more than 5% a year since 1996.

Perhaps you own alot of this stock?



To: tech101 who wrote (70062)4/1/2000 8:19:00 PM
From: Clarksterh  Respond to of 152472
 
Youlu - While I've owned SILI for quite a while, I wouldn't go so far as to say that new power converter/management chips are the primary reason than new mobile devices last longer. You need only look at the specs on phone ICs over the last few years to see that.

Clark