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--- lab_electrical_engineering:4_ac_voltage [2026/03/03 05:00] – angelegt mexleadmin
+++ lab_electrical_engineering:4_ac_voltage [2026/03/03 05:02] (aktuell) – mexleadmin
@@ Zeile 1: / Zeile 1: @@
-====== Experiment 3: Rectifiers  ======
+====== Experiment 4: Alternating Voltage ======
-===== Objectives of the experiment =====
+===== Objectives of the Experiment =====
 <WRAP group><WRAP column half>
-Getting to know the following components
+Getting to know
-  * Half-wave rectifier, bridge rectifier
+  * sinusoidal quantities, active (real), reactive, and apparent resistance/impedance, phasor diagrams
-  * Ripple voltage
+  * behavior of an RC and RL series circuit with different passive components at constant frequency
-  * Fixed voltage regulator
+  * low-pass filter (behavior of an RC circuit at different frequencies)
-  * Three-phase AC, three-phase bridge rectifier
+  * RLC series resonant circuit: voltage across the resistor and impedances at different frequencies
 </WRAP><WRAP column half>
 Applying
-  * Voltage analysis in the time domain using a simulation program
+  * voltage analysis in the time domain using a simulation program
 </WRAP></WRAP>
-===== Preparation for the lab =====
+===== Preparation for the Lab =====
 <panel type="warning" title="in the ILIAS course">
-Read the documents for Experiment 3 here. \\
+Read the materials for Experiment 4 here. \\
-These will be made public one week before the experiment.
+They will be made public one week before the experiment.
 </panel>
-===== Preparation for the oral short test =====
+===== Preparation for the Oral Short Quiz =====
+<WRAP right>
+<imgcaption image1|Simplified representation of an antenna>
+{{elektrotechnik_labor:440px-dipole_receiving_antenna_animation_6_800x394x150ms.gif}}
+</imgcaption>
+</WRAP>
 For this experiment you should
   - be able to apply and explain the following concepts:
-    - Characteristic curve of an ideal and a real diode
+    - phasor representation
-    - Structure and physical operating principle of a diode
+      - of harmonic signals
-    - Half-wave and bridge rectifier circuit
+      - of impedance quantities
-      - Structure
+    - complex impedance operators (e.g. $j \cdot X_L$)
-      - Differences when using ideal vs. real diodes
+    - cutoff frequency
-      - Output voltage for a given input voltage
+    - series resonant circuit
-      - Reason and function of the additional capacitor
+      - different voltages $U_R$, $U_C$, $U_L$ for $f\rightarrow 0$ and $f\rightarrow \infty$
-      - Applications
+      - graphical and computational determination of the complex impedance $\underline{Z}$ of the circuit
-    - Graphical and analytical determination of characteristic values of a periodic signal, e.g.
+      - behavior of $\underline{Z}$ at different frequencies
-      - Amplitude, peak-to-peak value
+      - definition, behavior, and calculation of the resonance frequency
-      - Period, frequency, angular frequency
+    - relationship between resonant circuit and antenna (see <imgref image1>)
-      - DC component, rectified average value, RMS value,
+  - consider the circuit when, instead of the voltage across the resistor $U_R$, the output voltage across the capacitor $U_C$ is measured.
-      - Zero-phase angle (leading? lagging?)
+    - What is this circuit called?
-    - Graphical and analytical use of multiple sinusoidal signals, e.g.
+    - What is it used for?
-      - Phase shift,
+    - What output voltage results for $f\rightarrow 0$ and $f\rightarrow \infty$?
-      - Addition in the time domain and phasor diagram
-An interactive visualization of a full-bridge rectifier can be found here.
-<WRAP><well>
-<imgcaption pic20|Simulation of an Inverter></imgcaption> \\
-{{url>https://www.falstad.com/circuit/circuitjs.html?hideSidebar=true&ctz=CQAgjCAMB0l2BOJyWoBxWmArGAbGgngOxEDMaaATGGdiNpAw09gKYC0YYAUAG7g8TKsSqCm3MRJAAWVlAUxsPAO7jwYMWUgyNU1SG27JhneCoZIPACanjFwwXAIxY62wBmAQwCuAGwAXGzsQKmw8RwxEVxB3b38g2yo5Zy0zTQw3T19A4OSJFxCwiKz43LUjUPCi0SgDSpExfGFaqzV81NCUyrbIzpk8Y0LejsqB3R6eACcGB2jZjB7wOB4ADwZiehoIPE1QsF1dKiY-AHsvax45MgUOjJCmSAB9MCfnuSQn7DfYb64nqhvJ5kK6QG7YYglFLEMxLTQvIEyMBgr4-SB-V6A+FkJ4AHQAzgBVAkAJR4+Nkg36VI60m8fnxbB4AGNKUcUuMHpg4OjDNAyM00DJiEjsGQ8AhsJZYJBeGpOZVsA5JvKqfMlVFhjxTswJiBVmhkfhmDAINIYLyrEA noborder}}
-</well></WRAP>