this position shuts off the position directly next to that one turns on this pattern is further detailed in fig8 a 8b and 8 c as illustrated if the flashing pattern begins on light block 35 then when this block turns off the light block 36 right next to it turns on when the ninth light block 40 is reached the pattern continues with first light block 43 and so on a representative u2018 light chaser u2019 circuit is shown in fig9 this circuit has been designed for 12 volt dc operation so it suitable for solar and or battery installations it can also be powered by line current ac if it properly stepped down to 12 volts dc an oscillator circuit is comprised of an integrated circuit multivibrator i e cd4047 44 capacitor 45 resistor 46 and potentiometer 47 with the pin connections as shown the multivibrator 44 is configured as a free running oscillator whose frequency is defined by capacitor 45 and resistor 46 and is fine tuned by potentiometer 47 for an output frequency of 5 hertz capacitor 45 has a value of 0 56 uf resistor 46 has a value of 51k ohms and the potentiometer 47 has a maximum value of 100k ohms the output from the pin 11 pin 11 of the integrated circuit multivibrator 44 is fed into pin 14 pin 14 of a decade counter integrated circuit i e cd4017 48 with the pin connections shown the decade counter integrated circuit 48 is configured as a 1 to 9 counter circuit with reset this circuit has nine outputs 49 50 51 52 53 54 55 56 57 when the circuit is turned on one of these outputs will start in the u2018 on u2019.