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> Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé
evgen2
ñîîáùåíèå Jul 5 2016, 23:48
Ñîîáùåíèå #1


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Ãðàæäàíå, çàíèìàëñÿ ëè êòî-íèáóäü ïðàêòè÷åñêè äåòñêèìè èçìåðåíèÿìè åìêîñòè ïëîñêîãî êîíäåíñàòîðà, ïîãðóæåííîãî â îáû÷íóþ âîäîïðîâîäíóþ âîäó?.

Èìååòñÿ äâå ïëàñòèíû (èç ìåòàëëà) 100x60ìì ñ ðàññòîÿíèåì ìåæäó ïëàñòèíàìè ïîðÿäêà 100ìì. Ìåæäó ïëàñòèíàìè îáû÷íàÿ âîäà èç-ïîä êðàíà.
Íó âîò ÷òî-òî âðîäå òàêîãî


Ïî øêîëüíîé ôîðìóëå äëÿ ïëîñêîãî êîíäåíñàòîðà C= ε0*ε*S/d åìêîñòü äîëæíà áûòü îêîëî 0.4 0.04 íàíîôàðàä.
Áåðåì êîíäîâûé ñîâåòñêèé äèâàéñ äëÿ èçìåðåíèÿ åìêîñòè è ïîëó÷àåì




íó à åñëè áåç äèâàéñà ïîäàâàòü ñòóïåíüêó íàïðÿæåíèÿ íà êîíäåíñàòîð, òî ïîëó÷àåì âîò òàêóþ çàãîãóëèíó



Çàãîãóëèíà âðîäå áû êàê âïîëíå ñîîòâåòñòâóåò ñõåìå

RC-öåïî÷êè ñ ïàðàëëåëüíûì è ïîñëåäîâàòåëüíûì ñîïðîòèâëåíèÿìè. (èçâåñòíîå ñîïðîòèâëåíèå R=5êÎì, R1, R2 è C íåèçâåñòíû è îöåíèâàþòñÿ ïî ïåðåõîäíûì êðèâûì)

Îäíàêî åñòü íüþàíñ. Âñÿêèå ïîäãîíêè ïàðàìåòðîâ ñõåìû ïîä íàáëþäàåìûå êðèâûå äàþò çíà÷åíèÿ åìêîñòè íà óðîâíå ìèëëèôàðàä.
×òî íèêàê íå ïîõîæå íè íà øêîëüíóþ ôîðìóëó, íè íà çíà÷åíèå åìêîñòè, èçìåðåííîå äèâàéñîì.

È ÷òî äåëàòü - íåÿñíî.

Ñîîáùåíèå îòðåäàêòèðîâàë evgen2 - Jul 6 2016, 18:03
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timurey
ñîîáùåíèå Jul 6 2016, 18:15
Ñîîáùåíèå #2





Ãðóïïà: Ó÷àñòíèê
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Òàê âû ãåîôèçèêó èçîáðåòàåòå.
Ïîñìîòðèòå https://ru.wikipedia.org/wiki/Ýëåêòðîðàçâåäêà


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timurey.
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evgen2
ñîîáùåíèå Jul 6 2016, 18:37
Ñîîáùåíèå #3


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Öèòàòà(РўРёРјСѓСЂ Ð ÑžÐ Â°Ð Ñ @ Jul 6 2016, 21:15) *
Òàê âû ãåîôèçèêó èçîáðåòàåòå.
Ïîñìîòðèòå https://ru.wikipedia.org/wiki/Ýëåêòðîðàçâåäêà


ïî÷åìó èçîáðåòàåì? Ìû íèêàêèõ îáðàòíûõ çàäà÷ íå ðåøàåì, ó íàñ ïðîñòîå èçìåðåíèå "â îäíîé òî÷êå". Äà è "èçìåðèòåëè âëàæíîñòè ïî÷âû" ó êàæäîãî çàáîðà ïðîäàþòñÿ. ×òî îíè èçìåðÿþò - îòäåëüíûé âîïðîñ.

Êñòàòè, Âèêèïåäèÿ òóò https://ru.wikipedia.org/wiki/%D0%92%D0%B5%...%BD%D0%B8%D0%B5 ïèøåò " Íà êîíòàêòå ñðåä ýëåêòðîä-ïî÷âà âîçíèêàåò äâîéíîé ýëåêòðè÷åñêèé ñëîé, âñëåäñòâèå ÷åãî ìåæäó ïðèåìíûìè ýëåêòðîäàìè âîçíèêàåò ÝÄÑ ïîëÿðèçàöèè. ÝÄÑ ïîëÿðèçàöèè èìååò íåáîëüøèå çíà÷åíèÿ ïîðÿäêà ìêÂ-ìÂ"...
Òóïî ñóíóëè òåñòåðîì â òîðô ñ âîäîé - ïîëó÷èëè 40-60 ìèëëèâîëüò. https://twitter.com/Evgen2/status/750631473380790272


Ñîîáùåíèå îòðåäàêòèðîâàë evgen2 - Jul 6 2016, 18:50
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Ñîîáùåíèé â ýòîé òåìå
- evgen2   Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé   Jul 5 2016, 23:48
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|- - evgen2   Öèòàòà(Ìåäæèêèâèñ @ Jul 6 2016, 07:06) Ýò...   Jul 6 2016, 07:48
|- - MegaVolt   Öèòàòà(evgen2 @ Jul 6 2016, 10:43) Ìåæäó ...   Jul 6 2016, 07:48
|- - Onkel   Öèòàòà(evgen2 @ Jul 6 2016, 11:48) Ìåæäó ...   Jul 6 2016, 21:25
|- - evgen2   Öèòàòà(Onkel @ Jul 7 2016, 00:25) èçìåðèò...   Jul 6 2016, 21:49
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|- - evgen2   Öèòàòà(mcheb @ Jul 6 2016, 09:04) Óâåëè÷ü...   Jul 6 2016, 07:56
|- - MegaVolt   Öèòàòà(evgen2 @ Jul 6 2016, 10:56) òàê õî...   Jul 6 2016, 07:59
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|- - MrYuran   Öèòàòà(evgen2 @ Jul 6 2016, 10:56) Ðàçíîï...   Jul 6 2016, 14:27
|- - _pv   Öèòàòà(MrYuran @ Jul 6 2016, 21:27) Íà ñà...   Jul 6 2016, 15:31
- - Onkel   êàê ïðàâèëüíî çàìåòèë ðÿä òîâàðèùåé, ó âàñ íå êîíä...   Jul 6 2016, 07:14
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|- - evgen2   Öèòàòà(_pv @ Jul 6 2016, 17:17) íà ïîðÿäî...   Jul 6 2016, 17:16
|- - _pv   Öèòàòà(evgen2 @ Jul 7 2016, 00:16) åùå ìî...   Jul 6 2016, 18:07
|- - evgen2   Öèòàòà(_pv @ Jul 6 2016, 21:07) â îïòè÷åñ...   Jul 6 2016, 18:15
- - Onkel   íó "ïðîêàëèòü" íå çíà÷èò ãðåòü äî 3 êèëî...   Jul 7 2016, 09:18
|- - evgen2   Öèòàòà(Onkel @ Jul 7 2016, 12:18) íó ...   Jul 7 2016, 10:43
|- - Ìåäæèêèâèñ   Öèòàòà(evgen2 @ Jul 7 2016, 14:43) Õî÷åòñ...   Jul 10 2016, 08:14
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