highway recovery system Archives – The Green Optimistic green tech news, since 2008 Fri, 12 Dec 2008 21:17:19 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 400 kW Piezoelectric Energy Recovery System Under Israel's Highways https://www.greenoptimistic.com/piezoelectric-highway-energy-recover-system-israel-20081213/ https://www.greenoptimistic.com/piezoelectric-highway-energy-recover-system-israel-20081213/#comments Fri, 12 Dec 2008 21:17:19 +0000 https://www.greenoptimistic.com/?p=1343 When I was like 12, I did an interesting experiment: I connected a piezoelectric cigarette lighter to a halogen lamp based voltmeter measuring up to 3000V. The short spark easily raised the voltage above that figure. Of course, the current is very small, but the voltage is high - to the degree of about several tens of thousands volts.

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