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Transistor/Amplifier pre-lab; Inverting vs Non-inverting
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[QUOTE="willem2, post: 4673295, member: 200209"] (A) The emitter follower will only be able to function if the base voltage is between 0 and 10 volts. R1 and R2 are chosen to make that happen, while the input voltage is beteen -5 and +5 volts. (B/C) those grounded non-inverting/inverting sources happen with opams, and they are not relevant here. To find out wether an amplifier is inverting: 1 - find out what the base voltage is with no input signal [itex] V_0 [/itex] 2 - now apply a small input voltage ΔV, so the base voltage is at [itex] V_0 + \Delta V[/itex] 3 - now find out what the base current in case 1 and case 2. 4 - same for the collector current in both cases 5. same for the voltage across the collector resistance (common emitter) or emitter resistance (emittor follower) 6. from the results in 5. you can find v-out in both cases. If v_out goes down when ΔV is positive, you have an inverting amplifier [/QUOTE]
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Transistor/Amplifier pre-lab; Inverting vs Non-inverting
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