This circuit is a chasing light circuit. The 14 red LEDs form a shape like the planet of Saturn, while 17 green LEDs imitate the rings around the planet. Fun and educational at several levels including model construction, introduction to electronics as well as promoting an interest in space and astronomy.
power supply : 9-12VDC.
consumption : 67mA max.@ 9VDC.
display : 31 LED’s – all 3 mm., (17 X green & 14 X red)
dimensions of PCB : 57.9mm X 67.6mm (2.28 x 2.66 in).