Enhancement Mode MOSFETS AS Switches - The OR Gate
TECTechnics Classroom   TECTechnics Overview

Enhancement Mode MOSFETS AS Switches - The OR Gate

Enhancement-mode MOSFETS are primary components in amplification and switching circuits. They are combined in various ways as gates to realize complex switching configurations.

Figure 123.7(a) is an arrangement of a NOR gate and an INVERTER to form an OR gate. Figure 123.7(b) is the symbol and Figure 123.7(c) is the truth table for the configuration.
Show how the circuit of figure 123.7(a) functions as an OR gate.

The strings: S7P5A51 (Physical Change).

The math:
Pj Problem of Interest is of type change (physical change). Transistors are primarily used for signal amplification and switching. Both are change problems.

Consider figure 123.7(a). The NOR gate is inverted by the NOT gate. The output=1 when A=1 or B=1; or when A=1 and B=1. The output=0 for all other input values as shown in the truth table (figure 123.7c).

Blessed are they that have not seen, and yet have believed. John 20:29

TECTechnic Logo, Kimberlee J. Benart | © 2000-2021 | All rights reserved | Founder and Site Programmer, Peter O. Sagay.