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--- projects:maps21:s:ext2:ext2 [2024/04/27 19:02]
carsten [Nulldurchgangsdedektor]
+++ projects:maps21:s:ext2:ext2 [2024/04/28 11:59]
carsten [Nulldurchgangsdedektor]
@@ Line 31: / Line 31: @@
 | aus neg. Halbwelle:   | beide Halbwellen:  |
-| {{:projects:maps21:s:ext2:tek00105.png?direct&200|}} {{:projects:maps21:s:ext2:tek00106.png?direct&200|}}\\ <color blue>Übertragungsfaktor //k// = 1,960 V / 9 V = 2 / 9 = 0,22...</color>  | {{:projects:maps21:s:ext2:tek00114.png?direct&200|Doppel}}  {{:projects:maps21:s:ext2:tek00117.png?direct&200|fein}}\\ <color blue>Übertragungsfaktor //k// = 2,1 V / 9 V = 2 / 9 = 0,233...</color>  |
+| {{:projects:maps21:s:ext2:tek00105.png?direct&200|}} {{:projects:maps21:s:ext2:tek00106.png?direct&200|}}\\ <color blue>Übertragungsfaktor //k// = 1,960 V / 9 V = 2 / 9 = 0,22...</color>  | {{:projects:maps21:s:ext2:tek00114.png?direct&200|Doppel}}  {{:projects:maps21:s:ext2:tek00117.png?direct&200|fein}}\\ <color blue>Übertragungsfaktor //k// = 2,1 V / 9 V = 2 / 9 = 0,233...\\ Anstieg 805 µs nach Nulldurchgang (=18° von 50 Hz)</color>  |
 Û = 10 V~ ⇒ I<sub>F</sub> = ( 10 V - 1,05 V) / 9100 Ω = 0,98 mA ⇒ I<sub>CE</sub> = 0,75 * I<sub>F</sub> = 0,737 mA ⇒ U<sub>R39</sub> = 4700 Ω * I<sub>CE</sub> = 3,47 V (gemessen: 2,60V)

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