Magic Wand Conjuring Trick

Posted on Aug 23, 2012

The operation of the circuit is fairly simple. Three AND logic gates of a 4081 CMOS IC are employed, with gates IC1a to IC1c being configured as a standard cascaded latch circuit. S1 to S3 serve as reset switches. The output at pin 10 will only switch to logic high when reed switches S4 to S6 are closed in sequence. Power transistor TR1 amplifies the output current to light bulb LP1.

Magic Wand Conjuring Trick
Click here to download the full size of the above Circuit.

Instead of a wand, a small neobdymium (super-strength) magnet may be stuck to one finger, and one`s finger used in place of the wand. In "stand-by" mode (with the bulb extinguished) the circuit will use very little current. Therefore a

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