Elenco Snap Circuits® Home Learning - Manual (Page 7)

Summary of Parts & Circuit Diagram Symbols
Dry Cell
Produces electrical energy using a chemical reaction. The larger terminal
(on the left) is positive (+). A single cell is often called a battery, but strictly
a battery is two or more cells joined together.
2 Cell Battery (B1)
Batteries supply electrical energy. A battery is more than one cell.
Wire
(2, 3, 4, 5, & 6 snap
wires, red and
black jumper wires)
Used to pass current very easily from one part of a circuit to another. A 3-
snap wire is shown here.
Wires joined
A ‘blob’ should be drawn where wires are connected (joined), but it is
sometimes omitted. Wires connected at ‘crossroads’ should be staggered
slightly to form two T-junctions, as shown on the right.
Wires not joined
In complex diagrams it is often necessary to draw wires crossing even
though they are not connected. Often the ‘bridge’ symbol shown on the right
is used because the simple crossing on the left may be misread as a join
where you have forgotten to add a ‘blob’!
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