Lichtempfindlicher AMV

This candle is a simple electronic toy. It can also be used for conjuring tricks. The circuit is designed around an incan- descent lamp which can be ignited with a match and can be blown out. Figure I shows the circuit and figure 2 the mechanical construction. The LDR is mounted in the side wall at lamp level. The side wall is covered with a translucent material to hide the LDR. If a butning match is held close to the lamp, the LDR is illuminated and the lamp lights. From now on the LDR is illuminated by the lamp, so the lamp continues to burn. If we blow against the lamp, so that it swings away from the LDR, the lamp is extinguished.