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(ou) V - Andrei

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Redressement d<strong>ou</strong>ble alternace (pont de Graetz)<br />

V i<br />

D 1<br />

D 3<br />

V s ,<br />

V i<br />

D 2<br />

D 4<br />

R<br />

V s<br />

R c<br />

■ Fonctionnement<br />

➪ quand V i > ~1.4V :<br />

D 1 et D 4 = passants, D 2 et D 3 = bloquées<br />

Parc<strong>ou</strong>rs du c<strong>ou</strong>rant :<br />

➪ quand V i < ~ -1.4V :<br />

D 1 et D 4 = bloquées, D 2 et D 3 = passantes<br />

Parc<strong>ou</strong>rs du c<strong>ou</strong>rant :<br />

~1.4V<br />

t<br />

V i<br />

< 1.<br />

4V<br />

50

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