Term
How to find Ri' of amplifier
(two-port linear circuit) |
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Definition
1. Apply Vtest, Itest to input
2. Apply RL to output
3. Ri' = Vtest / Itest |
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Term
| How to find Ro' of amplifier (two-port linear circuit) |
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Definition
1. Apply Vs, Rs to input (Vs = Vt)
2. Turn off Vs (Thev. shortcut)
3. Apply Vtest, Itest to output
4. Ro' = Rt = Vtest / Itest |
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Term
| How to find A' of amplifier (two-port linear circuit) |
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Definition
1. Remove load resistor (if one exists)
2. Apply Vtest, Itest to input
3. A' = Vout' / Vin' = Voc / Vtest |
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Term
| Voltage follower circuit parameters |
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Definition
A'= 1
Ri'= ARi = infinity
Ro'= Ro/A = 0 |
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Term
| Non-inverting amplifier circuit parameters |
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Definition
A'= (R1+Rf)/R1
Ri'= (ARi)R1/(R1+Rf) = infinity
Ro'= (Ro/A)(R1+Rf)/R1 = 0 |
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Term
| Inverting amplifier circuit parameters |
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Definition
A'= -Rf/R1
Ri'= R1 (low value)
Ro'= (Ro/A)(R1+Rf)/R1 = 0 |
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Term
| Current-to-voltage converter circuit parameters |
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Definition
Vout = IsRf
Ri'= R1
Ro'= Ro/A= 0 |
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