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--- lab_electrical_engineering:5_opamps_1 [2026/03/03 05:04] – angelegt mexleadmin
+++ lab_electrical_engineering:5_opamps_1 [2026/04/28 17:02] (current) – [Preparation for the laboratory] mexleadmin
@@ Line 1: / Line 1: @@
 ====== Experiment 5: Operational Amplifier ======
   * Circuits on the breadboard
-  * Integrator
+  * Inverting operational amplifier
-  * Non-inverting Schmitt trigger
+  * Non-inverting operational amplifier
-  * Triangle–square-wave generator
+  * Operational amplifier as current source
-  * Pulse-width modulation and control of a DC motor
+  * Operational amplifier as active filter
 ===== Preparation for the laboratory =====
-<panel type="warning" title="in the ILIAS course">
+  * [[electrical_engineering_and_electronics_1:block21|Block 21 — Op-Amp Basics]]
-Read the materials for Experiment 5 here. \\
+  * [[electrical_engineering_and_electronics_1:block22|Block 22 — Negative-feedback Op-Amp Circuits]]
-They will be published one week before the experiment.
+  * [[electrical_engineering_and_electronics_1:block24|Block 24 — Wrap-up and Applications]]
-</panel>
 ===== Preparation for the oral short exam =====
 For this experiment, you should be able to apply and explain the following concepts:
-  - "golden rules" for the negatively feedback, idealized operational amplifier
+  - "golden rules" for the negative feedback, idealized operational amplifier
-  - deviating properties of the real operational amplifier (e.g., output swing range, slew rate)
+  - Inverting operational amplifier
-  - output-voltage waveform $U_A$ of the inverting integrator (inverting integrator) for different input voltages $U_E$, e.g.
+    - Gain of inverting operational amplifier
-    - DC voltage
+    - Sum of currents at inverting input (KCL)
-    - square-wave voltage
+    - Voltage at inverting input relaltive to GND (KVL)
-    - arbitrary voltage waveform
+  - Non-inverting operational amplifier
-  - integration time constant of the inverting integrator
+    - Gain of non-inverting operational amplifier
-  - Schmitt trigger
+    - Operational amplifier used as current source (principle of function)
-    - difference in feedback compared to the inverting integrator
+    - Operational amplifier used as low-pass filter, cut-off frequency calculation (Sallen-Key configuration)
-    - idealized relationship between $U_E$ and $U_A$
-    - idealized line diagram: $U_E$ and $U_A$ as a function of time
-    - switching thresholds
-    - threshold voltage
-    - hysteresis
-    - real behavior: output "in saturation"
-  - structure of the triangle–square-wave generator