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--- lab_electrical_engineering:2_capacitors:diodes [2026/03/21 23:14] – mexleadmin
+++ lab_electrical_engineering:2_capacitors:diodes [2026/03/21 23:35] (current) – mexleadmin
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 {{drawio>lab_electrical_engineering:2_capacitors:Fig-15_V2-Zener-diode-symbol.svg}}
 <imgcaption Fig-15_V2-Zener-diode-symbol | Circuit symbol for a Z-diode> </imgcaption>
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-**Inform yourself about Z‑diodes and their circuit.**
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+**Inform yourself about Z‑diodes and their circuit.**
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 The function generator is to feed a rippled voltage into a circuit consisting of a Z‑diode and series resistor. The generator voltage and the voltage at the Z‑diode are to be measured with the oscilloscope. Draw the circuit with generator, Z‑diode and series resistor as well as oscilloscope with the given values: \\
   * Zener diode: Z 2.4 V / 0.01 W
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   * DC offset: +5 V
   * Frequency: 50 Hz.
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 Determine the required resistor for current limiting of the Zener diode under the above condition (document your calculation below!).
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 Which resistors from the E‑series can be used? \\
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 Is it better to choose a higher or lower resistor? Why?
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 Build the circuit and set the generator voltage accordingly. Now measure with the oscilloscope the voltage after the generator with Channel 1 and after the Zener diode with Channel 2. Enter the oscilloscope traces in the <imgref Fig-13_V2-Zener-Screen-diagram> shown below. Label the traces of the corresponding voltages.
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 == Recording a diode characteristic curve with the oscilloscope in X–Y mode ==
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 {{drawio>lab_electrical_engineering:2_capacitors:Fig-11_V2-Diode-Osci.svg}}
 <imgcaption Fig-11_V2-Diode-Osci | Diode characteristic with oscilloscope> </imgcaption>
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 Record the screen image of the diode characteristic in <imgref Fig-12_V2-Diode-charc> and determine the forward voltage of the diode by placing a straight line in the screen diagram.
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 Give the determined forward voltage of the diode 1N4005P:
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