This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ee symbols in Fig. 3.1. The type of ground in Fig. 3.1(b) is
called a chassis ground and is used in devices where the case, enclosure,
or chassis acts as a reference point for all circuits. When the potential of
the earth is used as reference, we use the earth ground in Fig. 3.1(a) or
(c). We shall always use the symbol in Fig. 3.1(b).
Once we have selected a reference node, we assign voltage designations to nonreference nodes. Consider, for example, the circuit in Fig.
3.2(a). Node 0 is the reference node (v = 0), while nodes 1 and 2 are
assigned voltages v1 and v2 , respectively. Keep in mind that the node
voltages are deﬁned with respect to the reference node. As illustrated in
Fig. 3.2(a), each node voltage is the voltage rise from the reference node
to the corresponding nonreference node or simply the voltage of that node
with respect to the reference node.
As the second step, we apply KCL to each nonreference node in the
circuit. To avoid putting too much information on the same circuit...
View Full Document
This note was uploaded on 07/16/2012 for the course KA KA 2000 taught by Professor Bkav during the Spring '12 term at Cambridge.
- Spring '12