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enhance the current carriers in the channel. A MOSFET can be constructed that will operate in either
mode depending upon what type of bias is applied, thus allowing a greater range of input signals.
In addition to the two basic modes of operation, the MOSFET, like the JFET, is of either the
P-channel type or the N-channel type. Each type has four elements: gate, source, drain, and substrate. The
schematic symbols for the four basic variations of the MOSFET are shown in views A, B, C, and D of
figure 3-52.
Figure 3-52A.—MOSFET symbols.
Figure 3-52B.—MOSFET symbols.
Figure 3-52C.—MOSFET symbols.
