SNAP CIRCUITS BRIC: STRUCTURES, Instruction Manual

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Project 11
LEDs in Series & Parallel
2x
6x
Build the circuit as shown, and turn
on the slide switch (S1). The LEDs (D8,
D11, & D12) light; watch how their
patterns change.
Try swapping the LED locations and
replacing one with the blue LED (D9),;
try all combinations and see how the
effects change. You can also place the
unused 3-snap wire where the color2
LED is and see how the circuit changes.
Here the color LED and blink red LED are connected in
parallel, and then connected in series with the color2
LED, to produce some interesting effects. The electricity
from the batteries flows through the color2 LED, then
splits up between the color and blink red LEDs, then re-
combines in the switch before returning to the batteries.
When LEDs are connected in series the battery voltage
may not be strong enough to fully turn them on. Red
light is easier to produce then the other colors, and so
turns on more easily.