Elenco Circuit Maker Sound Plus 200 - Manual (Page 26)

Part B
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Project #36
Build the circuit and connect the black jumper wire as shown in Part A.
The lamp (L4) is bright because it is powered by three (3) 1.5V “AA”
batteries (4.5V total).
Remove the right battery from the holder (B3) and move the end of the
black wire to touch the right contact point in the holder as shown in Part
B. The lamp is not as bright because now it is only powered by 2
batteries (3V total).
Now also remove the center battery from the holder and move the end
of the black wire to touch the center contact point in the holder as shown
in Part C. The lamp is dim because now it is only powered by 1 battery
(1.5V total).
The batteries in the holder are connected in series to give a higher total
voltage.
Batteries in Series
Build the circuit and connect the black jumper wire as shown in Part A.
The red LED (D1) is bright because it is powered by three (3) 1.5V “AA”
batteries (4.5V total).
Remove the right battery from the holder (B3) and move the end of the
red wire to touch the right contact point in the holder as shown in Part B.
The red LED is just about as bright because 2 batteries (3V total) give it
enough voltage to work properly.
Now also remove the center battery from the holder and move the end
of the red wire to touch the center contact point in the holder as shown
in Part C. The red LED is dim.
Compare how the LED works here to how the lamp worked in the
preceding project.
Batteries in Series -
LED
Project #37
Part C
Part A
Part A
Part B
Part C
CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 26