Here is a pic of our pre lab, we chose 22kOhms for our resistors. The actual values however were, R1=21.5kOhm, R2=21.7kOhm R3=21.4kOhm. Since our R values should betheoretically equal, our Vout equation should be Vout=-(Va+Vb). Our values made since except for Va=1, the value should've been -1V but it was -1.94V. For the last two values the %error was huge because of the saturation of the Op-Amp. Here are our experimental values from our board Here's our circuit
Here are our values initials, however, most of them are wrong. The initial current we should've got is I=5V/1KOhm=.005 mA. And the L/R value should've been L/(2.2kOhm)=4.54*10^-7. And L/R*5=2.27*10^-6s=2.27 micro seconds. Here's the circuit we made. R1=.982 kOhm R2=2.16kOhm. was .98 mH Here's our graph of our circuit. Our 5*(L/5) was 4.17 micro seconds, so the percent error is 83.7C%. I'm assuming the reason for the huge error is due to the circuit not being set up properly.
In the bottom right we provided the relationship between the output voltage and the input voltage. Which broke down to the output V is equal to R2/R1*(Vb-Va). It's called a difference amplifier because it amplifies the difference between the two V sources and rejects the common signal between the two. Here is a schematic of the circuit we made. The actual resistances of the resistors are on the previous pic. Which were R1=R3=9.7 kOhm, and R2=R4=19.9 kOhm Here's a table of our output and input voltages. Our graph sort of worked out. It roughly resembles a proper saturation graph This one however is completely off. fe Here are our values in excel with error. When Vb=1 i expected the saturation to be around 4.30 and -4.6, since our values topped off around there. However, when Vb=-1 we got max 5.24 and -3.6. So there must've been a mistake with our circuit. However, some values did make sense. For example, when Vb=1 our valu...
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