Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung | Nächste Überarbeitung Beide Seiten der Revision | ||
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electrical_engineering_1:network_analysis [2023/11/28 00:37] mexleadmin |
electrical_engineering_1:network_analysis [2023/11/28 00:42] mexleadmin |
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|---|---|---|---|
| Zeile 536: | Zeile 536: | ||
| Based on the E24 series, the following values are next to the calculated ones: | Based on the E24 series, the following values are next to the calculated ones: | ||
| \begin{align*} | \begin{align*} | ||
| - | R_3 &= 43 {~\rm k\Omega}\\ | + | R_3^0 &= 43 {~\rm k\Omega}\\ |
| - | R_1 &= {{1}\over{3}} | + | R_1^0 &= {{1}\over{3}} |
| - | R_2 &= {{1}\over{5.09}}(R_3 + 15 {~\rm k\Omega}) = 12 {~\rm k\Omega} | + | R_2^0 &= {{1}\over{5.09}}(R_3 + 15 {~\rm k\Omega}) = 12 {~\rm k\Omega} |
| \end{align*} | \end{align*} | ||
| Zeile 581: | Zeile 581: | ||
| * What is the input resistance $R_{\rm in}(R_1, R_2, R_3)$ of the circuit (viewed from the sensor)? | * What is the input resistance $R_{\rm in}(R_1, R_2, R_3)$ of the circuit (viewed from the sensor)? | ||
| - | # | + | # |
| \begin{align*} | \begin{align*} | ||
| Zeile 588: | Zeile 588: | ||
| \end{align*} | \end{align*} | ||
| - | # | + | # |
| - | * What is the minimum allowed input resistance ($R_{\rm in}(R_1, R_2, R_3)$) for the sensor to still deliver current? | + | * What is the minimum allowed input resistance ($R_{\rm in, min}(R_1, R_2, R_3)$) for the sensor to still deliver current? |
| + | |||
| + | # | ||
| + | |||
| + | \begin{align*} | ||
| + | R_{\rm in, min} &= {{U_{\sense}}\over{I_{sense, | ||
| + | &= \rm {{15 V}\over{1 mA}} \\ | ||
| + | &= 15 k\Omega \\ | ||
| + | \end{align*} | ||
| + | |||
| + | # | ||
| # | # | ||