Datasheet-1

Project 86 Hypnotic Discs
Part A
Build the circuit as shown. Cut out the red spiral pattern shown and tape it on the
fan. Spin the pattern by briefly pushing the press switch (S2). You will see the
most interesting effects when the pattern is spinning slowly.
Part B
Replace the pattern with the colored lines pattern shown. When the switch is
pressed, the arcs turn into colored rings with a black background. Notice how the
color drops when it is stretched to make a complete circle.
Part C
Place the circuit under a fluorescent light with a T12 bulb (1.5” diameter) that runs
on normal house current. and spin the disc slowly. As the speed changes, you
may notice the lines first seem to move in one direction, then they start moving in
another direction. This effect is because the lights are blinking 120 times a second
and the changing speed of the motor is acting like a strobe light to catch the motion
at certain speeds.
+
!
WARNING: Moving parts. Do not
touch the fan or motor during operation.
!
WARNING: Do not
lean over the motor.
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