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Latest posts from topic “[HELP]Risoluzione circuiti del secondo ordine.” Latest posts from topic “[HELP]Risoluzione circuiti del secondo ordine.” on “ElectroYou”. 2020-10-04T14:35:16Z https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119 Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863434 RenzoDF 2020-10-04T22:40:40Z 2020-10-04T22:40:40Z
:ok:
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863394 dlfdnc 2020-10-04T18:01:58Z 2020-10-04T18:01:58Z
[quote="RenzoDF"]Quando hai finito per favore posta l'ultima parte della soluzione, ovvero come ricavi A1 e A2 e la vC(t).
Grazie

... e complimenti per l'impegno e la costanza. :ok:

Ci siamo! :-)
Allour, proseguo con il calcolo di A1:
[unparseable or potentially dangerous latex formula]

Per questione di ordine, considero a parte [unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
Calcolo A2:
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863377 RenzoDF 2020-10-04T16:14:33Z 2020-10-04T16:14:33Z
Quando hai finito per favore posta l'ultima parte della soluzione, ovvero come ricavi A1 e A2 e la vC(t).
Grazie

... e complimenti per l'impegno e la costanza. :ok:
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863374 dlfdnc 2020-10-04T15:52:06Z 2020-10-04T15:52:06Z
Oh ok, non avevo mai considerato questo aspetto del circuito, dunque devo calcolare la corrente a 0 come -3A.
Me lo appunto comunque, mi state dando un ottimo spunto d'osservazione. Grazie davvero per la pazienza!
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863369 RenzoDF 2020-10-04T15:28:12Z 2020-10-04T15:28:12Z
Ti ricordo che aprendo interruttore sono solo le due grandezze di stato che non presenteranno discontinuità (in una rete come la nostra priva di forzanti impulsive), ovvero

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

di conseguenza, per t=0^+, visto che la tensione su C risulta nulla, sarà nulla anche la corrente nel resistore, e di conseguenza, per la KCL

[unparseable or potentially dangerous latex formula]

La [unparseable or potentially dangerous latex formula] non ci interessa in quanto i_C può tranquillamente presentare discontinuità, così come avviene nel nostro caso

[unparseable or potentially dangerous latex formula]

;-)
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863368 dlfdnc 2020-10-04T15:17:08Z 2020-10-04T15:17:08Z
Quel che mi viene da pensare su [unparseable or potentially dangerous latex formula] è che entrando nel ramo del condensatore incontra resistenza infinita, dunque torna indietro proseguendo sul ramo dell'induttore, (escludendo il ramo della resistenza parallela, in quando viene "preferito" il corto). Ma non so onestamente cosa succeda ad [unparseable or potentially dangerous latex formula] oltre questo.
Per quanto riguarda la [unparseable or potentially dangerous latex formula], si lo avevamo dedotto sia dal parallelo con un corto, sia confermato dalla Kirchhoff.
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863365 RenzoDF 2020-10-04T14:50:11Z 2020-10-04T14:50:11Z
[quote="dlfdnc"] ...
[unparseable or potentially dangerous latex formula]
in quanto circuito aperto. ...

Eh, no! :mrgreen:

... il circuito è aperto, ma ... ;-)

...
[unparseable or potentially dangerous latex formula] ...
Ho fatto degli errori di distrazione tali da rovinare tutto. #-o

Diciamo

[unparseable or potentially dangerous latex formula]

Ma nel ricavare le due equazioni di stato abbiamo già visto che [unparseable or potentially dangerous latex formula], no?
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863364 dlfdnc 2020-10-04T14:44:17Z 2020-10-04T14:44:17Z
[quote="RenzoDF"]Beh, vC=0 per il cortocircuito dell'induttore, ad ogni modo

[unparseable or potentially dangerous latex formula]

Ci avevo pensato a V_C=0 dato che V_L=0 e C//L, ma non mi sentivo abbastanza sicuro da scriverlo.
[unparseable or potentially dangerous latex formula]
in quanto circuito aperto.
E inoltre puoi esplicitare la forma della risposta per v_C(t), evidenziando il ruolo di quei due coefficienti A1 e A2?

Certo!
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
Ho fatto degli errori di distrazione tali da rovinare tutto. #-o
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863362 RenzoDF 2020-10-04T14:36:26Z 2020-10-04T14:36:26Z
Beh, vC=0 per il cortocircuito dell'induttore, no? ;-)

Ad ogni modo, da quei valori

[unparseable or potentially dangerous latex formula]
Re: [HELP]Risoluzione circuiti del secondo ordine. https://www.electroyou.it/forum/viewtopic.php?f=2&t=82119#p863361 dlfdnc 2020-10-04T14:35:16Z 2020-10-04T14:35:16Z
[quote="RenzoDF"][quote="dlfdnc"]...
[unparseable or potentially dangerous latex formula]

Premesso che non vedo cosa ci azzecchi [unparseable or potentially dangerous latex formula], quanto vale [unparseable or potentially dangerous latex formula] :?:
Hai ragione, ho commesso un errore nella trascrizione della formula. [unparseable or potentially dangerous latex formula] effettivamente non ha senso li, avrei dovuto dedurlo dal fatto che le costanti A sono dipendenti dalle condizioni iniziali.
[unparseable or potentially dangerous latex formula], calcolato considerando il circuito:

Dunque:
[unparseable or potentially dangerous latex formula]
E-V_{R_1}=V_C=9-9=0 V;
Questa è la considerazione che ho seguito per determinarla.