http://www.ahcpub.com/ahc_root_html/hot/archive/pem122002.html

"I tell patients that they could lose 4.5 pounds in one year by
not using their remote control"

Build your super-switch ; just do it whilst running a marathon
and get the calories balance in your favour for a few years

(just kidding, it's a PITA swapping leads all the time)

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Have you thought about FETs or analogue switches as made
by AD, MAX et al

eg

http://www.maxim-ic.com/SwitchMux.cfm

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