Inverting Amplifier: Calculate Peak Voltages & Currents

[naspek]

Hey there.. this is my lab discussion.. which i'll attend it this coming monday..
however.. there are questions that I'm not sure the formula to calculate it..
i really hope u guys can varified or corrected my formula.. =)

Homework Statement

Vin(pp) = 1.0V

is it Vin = Vin(pp) / 2 ?

Vout(pp) = -(Rf / R1) Vin(pp)

What are the peak voltages across R1 and Rf?

Calculate the peak currents of R1 and Rf

Homework Equations

Current through R1 = Vin(pp)/R1

Current through Rf = Vout(pp)/Rf

to find peak voltage, can i use voltage divider rule?

VR1 = 10k/43k x Vin
VRf = 33k/43k x Vin

 

[CEL]

pp means peak-to-peak

 

[naspek]

so.. my Vin = Vin(pp) / 2?

 

[CEL]

so.. my Vin = Vin(pp) / 2?

If Vin is the peak voltage, yes.

 

[DeeNos]

Hi there,

It looks like you are on the right track with your calculations! To verify your formulas, let's break down the steps:

1. To find the peak voltage across R1, you can use the voltage divider rule. This formula is correct:

VR1 = (R1 / (R1 + Rf)) x Vin(pp)

2. To find the peak voltage across Rf, you can also use the voltage divider rule. This formula is correct:

VRf = (Rf / (R1 + Rf)) x Vin(pp)

3. To find the peak current through R1, you can use Ohm's Law. This formula is correct:

Current through R1 = Vin(pp) / R1

4. To find the peak current through Rf, you can use Ohm's Law. This formula is also correct:

Current through Rf = Vout(pp) / Rf

Overall, it looks like your formulas are correct and you are using the correct equations to calculate the peak voltages and currents in the inverting amplifier. Keep up the good work and good luck with your lab discussion!