A jet aircraft employs a system for monitoring the rpm, pressure, and temperature values of its engines using sensors that operate as follows:

Figure 3-56 shows the logic circuit that controls a cockpit warning light for certain combinations of engine conditions. Assume that a HIGH at output W activates the warning light.

(a)* Determine what engine conditions will give a warning to the pilot.

(b) Change this circuit to one using all NAND gates.

Figure 3-56

Transcribed Image Text:

RPM sensor output = 0 only when speed < 4800 rpm P sensor output = 0 only when pressure < 220 psi Tsensor output = 0 only when temperature < 200°F