Solar powered portable calculator
作者： Stephen A. Roen
DOI:
关键词:
摘要: A portable calculator utilizing a solar panel array which can be either slidably moved within the calculator's housing or pivotly connected to it and when exposed incident light provide power for calculator.
lens.org 参考文章(5)
Maurice E Paradise, Solar powered portable radio receiver or the like ,(1956)
Robert L Weisbrich, Marlin R Shaffer, Versatile solar powered radio receiver or the like ,(1956)
Calvin S Fuller, Daryl M Chapin, Gerald L Pearson, Solar energy converting apparatus ,(1954)
Donn E Kefes, Norman J Regnier, Lawrence W Schmidt, Solar energy converting apparatus or the like ,(1958)
Y Tsuruishi, Charging circuit for wrist watch having solar battery ,(1971)