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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Photoflash battery ： ウィキペディア英語版 Photoflash battery A photoflash battery is a specialized zinc-carbon battery optimized to provide a high electric current output for a short duration of time, such as required to fire a flashbulb. Service life for this battery in flashlight service was short, since flashlights required a lower but continuous long duration current. Photoflash cells were in production during the flashbulb era, and were slowly phased out as alkaline cells came into general usage. The photoflash cell was produced as a 1.5 volt size D and size C cell. The cathode (the material packed between the carbon rod and zinc shell) of a zinc-carbon cell is generally made of powdered carbon black (or acetylene black), manganese dioxide and electrolyte. The MnO2 to carbon ratios vary between 10:1 and 3:1 for general purpose cells. A 1:1 mixture was used for photoflash batteries. This allowed a high current output with intermittent use, perfect for photoflash use.These cells had reduced capacity compared to those with a higher content of MnO2.〔David Linden, Thomas B. Reddy (ed). Handbook Of Batteries 3rd Edition. McGraw-Hill, New York, 2002 ISBN 0-07-135978-8 Chapter 8〕 == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Photoflash battery」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.