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DrQuine
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re: Power adapter market to grow by $2bn in five years
DrQuine   3/26/2013 10:20:17 PM
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One challenge that I find with old adapters is that they are not necessarily obviously connected to their host devices. It can take a bit of mixing and matching to find the adapter with the right connector. A benefit of USB charging (even if it is slow): I no longer need to worry about the voltage, pin-out, current, and connector type.

garydpdx
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re: Power adapter market to grow by $2bn in five years
garydpdx   3/20/2013 5:47:31 PM
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And add to that, Free Geek if you're in Portland, Oregon or Chicago or Toronto, or wherever else they may have an affiliate.

garydpdx
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re: Power adapter market to grow by $2bn in five years
garydpdx   3/20/2013 5:46:40 PM
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At least there is some standardization across product lines, e.g., Dell laptops and Motorola 2G phones like the RAZR (which adopted mini-USB). Second hand resale sites like Craigslist would be a great way to sell an old charger from a dead cell phone or computer (if it can't be used as a spare) and likewise, check on those sites before rushing off to Best Buy or Amazon.com ...

DrQuine
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re: Power adapter market to grow by $2bn in five years
DrQuine   3/19/2013 12:52:24 AM
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The market for power adapters is one of the tragic consequences of our disposable culture. Most of have enough discarded power adapters to populate a third world village - but each device requires a new incompatible one. Talk of standardization in telephone charger connectors (and the advent of USB charged devices) helps but we have a long way to go.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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