Answer Happy

1)Design a circuit that can perform: Vout = Vin * 1.8 + 32
using resistors, opamps and capacitors.
(a) For circuit elements, you may use as many LM741 op amps,
resistors and capacitors as needed.
(b) For voltage rails, you may use only ±15V power rails, and
the ground rail in your design.
2)Your boss now tells you that the temperature sensor reading is
very low, only a few tenths of a volt. Furthermore, the temperature
sensor reading contains a 60Hz sinusoid noise with an amplitude of
10% of the temperature sensor signal. The noise is caused by the
60Hz sinusoid in the room's lighting. As a result, you'll need
to make changes to your original design to: (c) increase the
temperature sensor reading by 10X (into the 100s of mV) and (d)
filter out the 60Hz hum noise by at least 90%.
To incorporate these changes, you may need to make significant
changes to your previous design.
Your circuit will now convert the temperature sensor reading's
10s of mV value (called Vc) into a 100s of mV value that reflects
the Fahrenheit scale (call it Vf). To be digitally processed
properly downstream, the output must be in the 100s of mV scale.
The temperature transducer, for example, sends a 37mV DC input
signal to the temperature converter circuit at 37°C. The DC output
of the converter circuit should be 986mV. (not 98.6mV). In
addition, the 37mV DC input signal is accompanied by a 60 Hz
sinusoid noise with a 3.7mV amplitude (10 percent of 37mV). This
60Hz noise should be reduced to 0.37mV (1/10 of 3.7mV) or less by
the converter circuit.