Elenco Snaptricity&reg - Manual (Page 49)

A “ brownout ” occurs when power plants cannot supply enough current to a
city during high demand, and must reduce the voltage below 120V. This
sometimes occurs on hot days in summer when everyone is using their air
conditioners.
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4-Position Switch Project #39
Educational Corner:
1A
1A
Solder
After Soldering
Set the slide switches (S5) to all positions and see what lights.
Operation
This circuit has four different lamp (L4) combinations, as if
the two slide switches were acting like one four-position
switch. The right lamp will always be on but its brightness
varies. The other lamps may be on or off.
This right lamp is always on but there are four different
paths to complete its circuit, because there are four slide
switch combinations. The meter measures the current
through one of the paths, see if you can find the others.
Description
Build the circuit and set the meter (M5) to the 1A scale.
Assembly
Actual electrical connections are
made with solder, not snaps. Solder is a special metal made
mostly of tin that melts at relatively
low temperature (about 500
O F).
Solder is applied and melted
around a joint where a connection
is being made; it creates a solid
bond between the metals.
Before Soldering
Electric Paths