Ukwakhiwa kohlelo losizo lokuzwa kufaka phakathi imikhakha emithathu yesayensi esetshenzisiwe- i-electrochemistry, ubunjiniyela kagesi nobunjiniyela bomsindo. Leli phepha likhathazekile ngokuxhumana phakathi kwalaba ababili bokuqala. Amabhethri empeleni ayizinto ezingekho emgqeni. Ukusebenza okulungile kutholakala kuphela uma izidingo zikagesi zosizo lokuzwa zihambisana kakhulu namandla wevolthi, amandla wokulinganisa kanye ne-impedance yebhethri. Ngemuva kweminyaka yokusebenza kahle, iseli lesimanjemanje elithi '675' lizuze ukwamukelwa komhlaba wonke futhi manje selisetshenziswa kuzinsizakusebenza eziningi zokuzwa 'ngemuva kwezindlebe'. Lapho amandla amaningi edingeka, iseli elikhudlwana nelincane elikhethekile le-LR6 'penlight' liyacaciswa. Amandla aphezulu angaholela ekusebenzeni kangcono kwesifunda, futhi kukhona ingcindezi yokwethula umkhiqizo osuselwa ku-3 V we-lithium. ILithium kufanele inikeze amandla aphezulu, kepha kunezinkinga ezisasele ukuthi zixazululwe. Ekugcineni, kungenzeka ukuthi imakethe ingahle ixazulule iseli lensimbi yomoya yomoya omude owamukeleka isikhathi eside. Uma kunjalo, uhlelo lwakamuva lwe-zinc-air lungaba nekusasa futhi lungaphumelela ngokusobala amaseli we-mercury '675' kanye ne-alkaline 'penlight'.

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