Elenco Snaptricity&reg - Manual (Page 35)

Sometimes switches are
pretty swift, they can sneak
current around a lamp and
make voltage shift.
Voltage Shifter Project #25
-34-
Educational Corner:
Since the battery voltage driving the circuit
is the same, bypassing the bottom lamp
shifts all the voltage to the top lamp. This
follows Kirchhoff’s Voltage Law.
5V
5V
Electric Paths
Both lamps (L4) are on and the meter shows the voltage
across the top lamp, which is half the battery holder (B3)
voltage.
Push the press switch (S2) to bypass the bottom lamp and
remove it from the circuit. Now the top lamp is much
brighter and the meter shows that the full battery voltage is
across it.
Operation
Modify the preceding circuit into this one. Keep the meter
(M5) on the 5V setting.
Assembly