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Kevin Neilson
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re: Heartbeat to power pacemakers
Kevin Neilson   11/25/2012 5:19:57 AM
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I don't know much about pacemakers, but I thought that a lot of them now had an inductive loop so you could charge the battery through the skin. When I was young I saw, in a museum, a nuclear-powered pacemaker. I guess they were used before battery technology improved. The power source lasted quite a while. I'm not sure how it worked, exactly. I think nuclear batteries normally generate heat and use thermocouples to create electricity, but I don't know if that's how these worked.

Paul Wassmund
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re: Heartbeat to power pacemakers
Paul Wassmund   11/28/2012 8:45:35 PM
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Just to address a minor point, open heart surgery is not required to implant a pacemaker or defibrillator. The device itself is placed under the skin via a small incision, and the leads are passed through veins into the heart via catheters. Pacemakers implants are sometimes performed on an outpatient basis, and defibrillators typically involve just an overnight stay.

MarkFromNJ
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re: Heartbeat to power pacemakers
MarkFromNJ   12/1/2012 1:05:45 AM
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"No need for 10 open heart surgeries over a lifetime!" It makes great VC roadshow slideware, but there is not much connection with reality.



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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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