Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

Link zu dieser Vergleichsansicht

Beide Seiten der vorigen Revision Vorhergehende Überarbeitung
Nächste Überarbeitung		 Vorhergehende Überarbeitung
electrical_engineering_and_electronics_1:block12 [2025/11/02 17:38] – [Symbols] mexleadminelectrical_engineering_and_electronics_1:block12 [2025/11/02 17:50] (aktuell) – [Learning objectives] mexleadmin
Zeile 4: Zeile 4:
 <callout> <callout>
 After this 90-minute block, you can  After this 90-minute block, you can 
-  - define a **capacitor** and **capacitance** $C=\dfrac{Q}{U}$ and use $C=\varepsilon_0\,\varepsilon_{\rm r}\,\dfrac{A}{d}$ for an ideal plate capacitor, including unit checks $[C]={\rm F}$.  +  - define a **capacitor** and **capacitance** $C$ and use it for an ideal plate capacitor, including unit checks $[C]={\rm F}$.  
-  - relate fields and material: $\vec{D}=\varepsilon\,\vec{E}$, $Q=\displaystyle\oint \vec{D}\cdot{\rm d}\vec{A}$ (Gauss), and $U=\displaystyle\int \vec{E}\cdot{\rm d}\vec{s}$. +  - relate fields and material. 
   - compute $C$ for key geometries (parallel plates, coaxial, spherical) and explain how $A$, $d$, $\varepsilon_{\rm r}$ scale $C$.    - compute $C$ for key geometries (parallel plates, coaxial, spherical) and explain how $A$, $d$, $\varepsilon_{\rm r}$ scale $C$. 
 </callout> </callout>
Zeile 95: Zeile 95:
  
   * The symbol of a general capacitor is given be two parallel lines nearby each other. \\   * The symbol of a general capacitor is given be two parallel lines nearby each other. \\
-  * Since **electrolytic capacitors** can only withstand voltage in one direction, the **polarisation** is often shown by a curved electrode (US) or a unfilled one (EU).+  * Since **electrolytic capacitors** can only withstand voltage in one direction, the **polarisation** is often shown by a curved electrode (US) or a unfilled one (EU). \\ Be aware that electrolytic capacitors can explode, once used in the wrong direction.
  
 {{drawio>electrical_engineering_and_electronics_1:CapSymbols01.svg}} {{drawio>electrical_engineering_and_electronics_1:CapSymbols01.svg}}