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Unformatted text preview: gain. Primary reason for instrumentation amplifier instead of difference amplifier is it requires practically no current from the input source and it has variable gain. Current divider formula for two inductors: i1=L1/(L1+L2)*it where it is net current entering parallel inductors. Conditions are i1(0)=0=i2(0) Voltage divider for two capacitors: C1/(C1+C2)*vt where vt is net voltage across capacitors. Conditions are v1(0)=v2(0)=0. Op amp can perform: addition, multiplication, subtraction, differentiation, and integration. Is the principle of superposition applicable to power? No, it is application to v and I only. Not applicable because v*i is not linear. Voltage in an inductor is continuous for current to be finite....
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- Spring '08