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Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé |
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Jul 5 2016, 23:48
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Ìåñòíûé
  
Ãðóïïà: Ó÷àñòíèê
Ñîîáùåíèé: 236
Ðåãèñòðàöèÿ: 1-04-06
Ïîëüçîâàòåëü ¹: 15 688

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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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Îòâåòîâ
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Jul 6 2016, 14:17
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Ãóðó
     
Ãðóïïà: Ñâîé
Ñîîáùåíèé: 2 563
Ðåãèñòðàöèÿ: 8-04-05
Èç: Nsk
Ïîëüçîâàòåëü ¹: 3 954

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Öèòàòà Ïî øêîëüíîé ôîðìóëå äëÿ ïëîñêîãî êîíäåíñàòîðà C= ε0*ε*S/d åìêîñòü äîëæíà áûòü îêîëî 0.4 íàíîôàðàä. íà ïîðÿäîê îøèáëèñü, âðîäå áû 40ïÔ äîëæíî áûòü, ÷òî íà ôîíå ïðîâîäèìîñòè âîäîïðîâîäíîé âîäû è íàìåðåííûõ 150 Îì - íå ðàçãëÿäåòü. Öèòàòà Ìåæäó ýëåêòðîäàìè - ïî÷âà, ïåñîê, ãðóíò, òîðô èëè êàêîå-íèáóäü ãîâíî. íóæíî èçìåðÿòü âëàæíîñòü è íàëè÷èå ãðóíòîâîé âîäû. Ïî èäåå âëàæíîñòü - ýòî ñêîëüêî âîäû ìåæäó ýëåêòðîäàìè, ò.å. åìêîñòü êîíäåíñàòîðà ñ äèýëåêòðèêîì âíóòðè. Íàëè÷èå âîäû îïðåäåëÿåì ïî ñîïðîòèâëåíèþ. åñëè ðå÷ü ïðî áîëüøèå ðàññòîÿíèÿ, ðàçáåðèòå ìèðêîâîëíîâêó è âìåñòî ýëåêòðîäîâ çàêîïàéòå ìàãíåòðîí, + èíäèêàòîð ïîëÿ èç Â× äèîäà. ïîãëîùåíèå 2.4ÃÃö ó ïî÷âû, ïåñêà, ãðóíòà, òîðôà èëè êàêîãî-íèáóäü ãîâíà â çàâèñèìîñòè îò åãî âëàæíîñòè äîëæíî çàìåòíî ìåíÿòüñÿ. òîëüêî ãëàâíîå â ìîìåíò èçìåðåíèÿ îêàçàòüñÿ ïîäàëüøå îò ìåñòà èçìåðåíèÿ. íó èëè ïàðó ðàäèîìîäóëåé íà 2.4ÃÃö êîòîðûå RSSI ïîêàçûâàòü óìåþò. îäèí íà ïåðåäà÷ó, äðóãîé íà ïðè¸ì. òîëüêî âîò êàê êàëèáðîâàòü ýòî - õç.
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Jul 6 2016, 17:16
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Ìåñòíûé
  
Ãðóïïà: Ó÷àñòíèê
Ñîîáùåíèé: 236
Ðåãèñòðàöèÿ: 1-04-06
Ïîëüçîâàòåëü ¹: 15 688

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Öèòàòà(_pv @ Jul 6 2016, 17:17)  íà ïîðÿäîê îøèáëèñü, âðîäå áû 40ïÔ äîëæíî áûòü, ÷òî íà ôîíå ïðîâîäèìîñòè âîäîïðîâîäíîé âîäû è íàìåðåííûõ 150 Îì - íå ðàçãëÿäåòü. íó äà, íî÷üþ ÿ îäèí íîëèê ëèøíèé íàðèñîâàë, âìåñòî 0.1 ì ïîñòàâèë 0.01ì Öèòàòà(_pv @ Jul 6 2016, 17:17)  åñëè ðå÷ü ïðî áîëüøèå ðàññòîÿíèÿ, ðàçáåðèòå ìèðêîâîëíîâêó è âìåñòî ýëåêòðîäîâ çàêîïàéòå ìàãíåòðîí, + èíäèêàòîð ïîëÿ èç Â× äèîäà. ïîãëîùåíèå 2.4ÃÃö ó ïî÷âû, ïåñêà, ãðóíòà, òîðôà èëè êàêîãî-íèáóäü ãîâíà â çàâèñèìîñòè îò åãî âëàæíîñòè äîëæíî çàìåòíî ìåíÿòüñÿ. òîëüêî ãëàâíîå â ìîìåíò èçìåðåíèÿ îêàçàòüñÿ ïîäàëüøå îò ìåñòà èçìåðåíèÿ.
íó èëè ïàðó ðàäèîìîäóëåé íà 2.4ÃÃö êîòîðûå RSSI ïîêàçûâàòü óìåþò. îäèí íà ïåðåäà÷ó, äðóãîé íà ïðè¸ì. òîëüêî âîò êàê êàëèáðîâàòü ýòî - õç. åùå ìîæíî ÑÎ2 ëàçåð èñïîëüçîâàòü ;-)
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Ñîîáùåíèé â ýòîé òåìå
evgen2 Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé Jul 5 2016, 23:48 Ìåäæèêèâèñ Ýòî ïðîöåññû â äâîéíîì ýëåêòðè÷åñêîì ñëîå íà ãðàíè... Jul 6 2016, 04:06 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 Àëåêñàíäð1 Ó êîíäåíñàòîðà ìåæäó ïëàñòèíàìè äîëæåí áûòü äèýëåê... Jul 6 2016, 05:06 mcheb Óâåëè÷üòå âðåìÿ èìïóëüñà ðàç â 10 è ëó÷øå ñäåëàòü ... Jul 6 2016, 06:04 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   evgen2 Öèòàòà(MegaVolt @ Jul 6 2016, 10:59) Òàê ... Jul 6 2016, 08:08    MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 11:08) Äà íå ... Jul 6 2016, 08:22     evgen2 Öèòàòà(MegaVolt @ Jul 6 2016, 11:22) Áîþñ... Jul 6 2016, 09:02      MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 12:02) Ïðåäïî... Jul 6 2016, 09:54      agregat Öèòàòà(evgen2 @ Jul 6 2016, 12:02) Åñëè â... Jul 6 2016, 10:08       evgen2 Öèòàòà(agregat @ Jul 6 2016, 13:08) Äëÿ õ... Jul 6 2016, 10:51  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  _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 РўРёРјСѓСЂ Ð ÑžÐ Â°Ð Ñ Òàê âû ãåîôèçèêó èçîáðåòàåòå.
Ïîñìîòðèòå https://r... Jul 6 2016, 18:15 evgen2 Öèòàòà(РўРёРјСѓСЂ Ð ÑžÐ Â°Ð Ñ @ Jul... Jul 6 2016, 18:37 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 MrYuran Âîò, îòêîïàë.
Êñòàòè, êëàññíàÿ èäåÿ, ïðåîáðàçîâàò... Jul 7 2016, 11:31 rx3apf ß áû ïåðâûì äåëîì ïîïðîáîâàë LC-êîíóð, ãäå åìêîñòü... Jul 7 2016, 18:52 Onkel Öèòàòà(rx3apf @ Jul 7 2016, 22:52) Ìîæíî ... Jul 7 2016, 20:34  evgen2 Öèòàòà(Onkel @ Jul 7 2016, 23:34) öåëàÿ ã... Jul 7 2016, 21:18 GetSmart Èçìåðÿòü, íàâåðíîå, ëó÷øå êàêèì-òî ìíîãîñòàäèéíûì ... Jul 8 2016, 05:31 rudy_b Êîíòðîëèðîâàòü âîäó ïðàâèëüíåå ïî äèýëåêòðè÷åñêîé ... Jul 8 2016, 14:04
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