Basics of electronic ...

Exercise 1:

Create an integrator circuit as shown in the figure below:

Then investigate the amplitude characteristic \(k_u(f)\) (ac simulation, Bode plot).

Next, apply a square wave signal with a frequency ten times higher and ten times lower than the cut-off frequency to the input. Observe the input and output timings for these two cases. Interpret the integration of the signal for a frequency greater than the cutoff frequency. Check how the amplitude of the output voltage depends on the excitation period of the rectangular voltage system (with unchanged amplitude) under conditions when the system acts as an integrator. When you're done, compare the result with the video:

Exercise 2:

Build a regulated DC voltage source as shown in the figure below:

and investigate the dependence of the load resistance on the output voltage for the systems:

a) without a voltage follower,

b) with a voltage follower (buffer) realized by means of an operational amplifier, for any assumed value of the voltage \(U_0\). 

When you're done, compare the result with the video:

Exercise 3:

Build a circuit that sums the input waveforms as shown in the figure below:

Plot the input and output waveforms (simulation vs. time - .tran ) for the assumed combination of shapes and amplitudes. Verify the operation of the signal adder.