Question

Figure 2-5 below is the circuit for subtracting two voltages, Vi and 12. Again, the required components are an op-amp and resistors. 15V V2 R3 R1 100kOhm 100kOhm - 15V -15V 15V Vout R2 100kOhm R4 w 100kOhm 15V -15V Figure 2-5: The Difference Circuit Experiment Steps 1. Build the circuit according to the circuit diagram. Notice that the two potentiometer on the left side are 0 - 1 k 2 potentiometers. Set and measure the appropriate voltages and fill-up the following table 2. (volts) (volts) Vou (volts) 0.5 4.5 -3.0 4.0 1.5 3.5 -2.0 -5.0 3.5 6.0 7.0 -5.0 4. Derive an expression that relates V1, V2 and You.

"the difference junction circuit"

Answer 1

V Ya Vout 4.5 -4 -3.0 4.0 105 3.5 3 -5.0 9.5 3.5 F 7.0 - S 0 -5.0 (ex Vout - Vouti + Yout a Yout, the very look Took Youth V. R4 V. look + R4+ R2 2ook Youty = V+ (1+ Rey V 2 (1+1) = Yout - Vouti + yout 2

.3 Multimeter-XMM2 X 4.5 V XMM2 А V S2 dB VCC -15.00 R2 w 100ko Multimeter-XMM1 X W + 100 R5eko da -3.997 V + O Set... Key=A 1kΩ VEE --15.0v A V 2 dB VEE XMMI R1 .... -15:0V 100k .01 Set... CC 15.0V Multimeter-XMM3 x R4 W 100k -741 VCC Roeba ta 500.009 mV Key= A 180 R3 M 100kg XMM3 A V dB 15.0V VEE Set... - 15.0V