*3.3.2 Example 2: generation of pulse train by coupling MBO under the action of the input signal*

Let the initial setting conditions for MBO1 and MBO2 be the same that corresponds to the zero voltage *VS* at the output of the detector (**Figure 9a**). After the input signal with amplitude *VC* ¼ 0*:*5 and duration T = 0.5 (**Figure 9a**) their synchronization is violated for time proportional to the amplitude of the input action. The output signal of the comparator with amplitude *VS* ¼ 1 appears after the beginning of the transition to the perturbed trajectory and pulses remain for a long time.

When long-term input signal T=1.5 of relatively small amplitude *VC* ¼ 0*:*1 is applied the transition to the perturbed trajectory and exit from it is performed in shorter time (**Figure 9b**). The output signal *VS* ¼ 1 occurs both after the rising slope and after the fall slope of the input pulse.

#### **3.4 Output**

The coupled memristor based oscillators with positive couplings have a set of stationary states in self-excitation mode.

An external signal can initiate a transition from one stationary state to another. Also such a signal can remove the system from the region of stationary states to the excited mode. This excitation is saved after completion of the input signal. The transition to new steady state takes some time after completion of the external excitation. The pulse train is generated at the comparator output during this time interval.

The coupling memristor based oscillators can be considered as the analog-todigital converters that provide conversion of input amplitude variation.
