 phase signal</a>
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            </li>
            <li class="nav-item" data-level="3"><a href="#example-3-sawtooth-signal-generator" class="nav-link">Example 3: Sawtooth signal generator</a>
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            </li>
            <li class="nav-item" data-level="3"><a href="#example-4-square-wave-generator" class="nav-link">Example 4: Square wave generator</a>
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