Many other symbols exist and may be found on
However, the symbols discussed below are components that
The circuit return or completion is normally
accomplished through the use of grounds. Grounds are usually of two
(1) Earth ground is a direct conducting connection to the earth
or some structure.
The symbol used to represent earth ground is
shown in figure 1-33A.
(2) Chassis ground is a conducting connection to the chassis or
frame of the equipment or circuit. The chassis ground may not be at
the same potential as the earth ground.
The symbol for a chassis
ground is shown in figure 1-33B.
A third symbol may be used to indicate a ground connection when all
identically annotated return connections are at the same potential.
The symbol for these common-ground connections is shown in figure
Many electronic devices require the use of an
greatly, based on the function of the equipment.
illustrates some of the common symbols used for antennas.