The output waveform of a CLC filter is superimposed by a waveform referred to as the "sawtooth wave". Let's explore why this is the case in detail.

- The CLC filter is a type of electronic filter that consists of a capacitor (C), an inductor (L), and a resistor (R) connected in series. It is commonly used to filter out unwanted high-frequency components from a signal.
- When an input signal is applied to the CLC filter, it first passes through the capacitor. The capacitor acts as a high-pass filter, allowing high-frequency components to pass through while blocking low-frequency components.
- The filtered signal then passes through the inductor. The inductor acts as a low-pass filter, allowing low-frequency components to pass through while blocking high-frequency components.
- Finally, the filtered signal passes through the resistor. The resistor helps to dampen any remaining high-frequency components and provides a load to the circuit.
- The combination of these three components in the CLC filter helps to attenuate unwanted high-frequency components while allowing the desired low-frequency components to pass through.

Now, let's understand why the output waveform of the CLC filter is superimposed by a sawtooth wave:

- The CLC filter operates based on the principles of energy storage and release in the capacitor and inductor.
- When an input signal is applied to the CLC filter, the capacitor starts to charge and store energy. As the input signal changes, the capacitor discharges its stored energy into the inductor, which then stores the energy.
- The discharge and charge cycles of the capacitor and inductor result in a waveform that resembles a sawtooth shape.
- This sawtooth waveform is superimposed on the output waveform of the CLC filter, causing variations in the amplitude and shape of the output signal.
- The exact shape and characteristics of the sawtooth waveform depend on the frequency and amplitude of the input signal, as well as the values of the capacitor, inductor, and resistor in the CLC filter circuit.

In conclusion, the output waveform of a CLC filter is superimposed by a sawtooth waveform due to the energy storage and release cycles of the capacitor and inductor in the filter circuit. The sawtooth waveform causes variations in the amplitude and shape of the output signal.