Another wavy light circuit with frequency and effect adjustment is shown in the figure. The light comes on softly when the 220 µF capacitor is charged, and its threshold point is adjusted in the 2.2 M ohm potentiometer. Soft erasure is determined by the 4.7 M ohm capacitor, and by the 1 M ohm resistor in the power field effect transistor gate. With the indicated values, the ignition cycles are between 2 and 10 seconds, but the reader can modify the components according to the desired applications.
