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| lab_electrical_engineering:rectangular-to-triangle_signal_conversion_integrator [2026/06/18 08:49] – mexleadmin | lab_electrical_engineering:rectangular-to-triangle_signal_conversion_integrator [2026/06/18 08:53] (current) – mexleadmin | ||
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| - Calculate the time constant $T_\mathrm{i}$ of the integrator from the given values. \\ \\ \\ \\ \\ \\ \\ \\ | - Calculate the time constant $T_\mathrm{i}$ of the integrator from the given values. \\ \\ \\ \\ \\ \\ \\ \\ | ||
| - | - Assumption: the capacitor is initially uncharged. A voltage $u_\mathrm{e}=+3~V$ is applied to the input. \\ How long does it take for the output voltage to reach $u_\mathrm{Tr}=-3~V$? Document your calculation. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | + | - Assumption: the capacitor is initially uncharged. A voltage $u_\mathrm{e}=+10~V$ is applied to the input. \\ How long does it take for the output voltage to reach $u_\mathrm{Tr}=-5~V$? Document your calculation. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ |
| - Roughly sketch the voltage curves that you expect at the TR output when you apply a bipolar square wave signal to the $u_\mathrm{e}$ input.\\ \\ \\ **Output TR**\\ \\ <wrap left> | - Roughly sketch the voltage curves that you expect at the TR output when you apply a bipolar square wave signal to the $u_\mathrm{e}$ input.\\ \\ \\ **Output TR**\\ \\ <wrap left> | ||
| - | - Build the circuit on the MEXLE-board. Make sure that the jumper at the bottom of the op-amp is set to the left so that the op-amp is supplied with +/- 3V. Connect channel 1 on the oscilloscope to $U_\mathrm{e}$ and channel 2 to TR. Connect the function generator to the $U_\mathrm{e}$ input. Set to square wave (bipolar) with a frequency of 3kHz and a voltage of 3 V (amplitude). Switch on the power supply. \\ \\ \\ **C1 = 10 nF, f = 3 kHz**\\ \\ <wrap left> | + | - Build the circuit on the MEXLE-board. Make sure that the jumper at the bottom of the op-amp is set to the left so that the op-amp is supplied with +/- 10V. Connect channel 1 on the oscilloscope to $U_\mathrm{e}$ and channel 2 to TR. Connect the function generator to the $U_\mathrm{e}$ input. Set to square wave (bipolar) with a frequency of 3kHz and a voltage of 10 V (amplitude). Switch on the power supply. \\ \\ \\ **C1 = 10 nF, f = 3 kHz**\\ \\ <wrap left> |
| - Compare your measurement with the calculation from part 2 and the forecast from part 3. Explain your result. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | - Compare your measurement with the calculation from part 2 and the forecast from part 3. Explain your result. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | ||