* Posts by JayBS

4 posts • joined 5 Jan 2011

EPIC asks FTC to probe Google's search biz tweak

JayBS
WTF?

"You can switch it off here"

You can't stop Google logging your searches, it seems, unless I've not read between the lines correctly? See the "However" caveat:

"You can remove all Web History from your Google Account at any time. While signed in to your Google Account:

Go to google.com/history.

Click Remove all web history.

However, as is common practice in the industry, and as outlined in the Google Privacy Policy, Google maintains a separate logs system for auditing purposes and to help us improve the quality of our services for users

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Bletchley Park to rebuild pioneering EDSAC computer

JayBS
Boffin

Hg Delay line: 'ow it worked

http://www.allaboutcircuits.com/vol_4/chpt_15/4.html

NB The banning of lead in solder is another example of EU over-reaction IMHO. The likely consequences ( higher failure-rates in electronic products) represent a possible ticking bomb.

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Who will rid me of these obsolete PCs?

JayBS
Boffin

Re Nup on AC

Sadly, your pithy "Power is Power" explanation is a tad over-simplistic : in AC circuits we have reactive currents as well as resistive: the former do not result in power dissipation. Hence the importance of power factor when specifying many higher-power electrical devices. Of more relevance to the SMPS example given here is the nature of the mains current waveform, which is highly non-sinusoidal, and thus the rms current x rms voltage equation does not yield true (i.e billed) power consumption. The typical error factor is in the range +50 to +100% .

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