At last, the 48 show
Upping the volts will make hybrid cars much cheaper
VOLTAGE is to electricity what pressure is to water: the more you have of it the more oomph you get. That is why electrical power lines work at high voltage. In the 1950s carmakers needed extra oomph of this sort to start the powerful high-compression engines then being introduced, so they increased the voltage of their vehicles’ electrical systems from six to 12. Now voltages are going up again—to 48.
This article appeared in the Science & technology section of the print edition under the headline “At last, the 48 show”
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