Analog Lab 5

Charlie Reynolds

DC Blocking: It is important to add a resistor and capacitor on the inputs and outputs of your circuit because it will block DC current from flowing through the circuit. Audio is AC current, so letting DC flow could potentially harm your input and output sources.

Vout = Vin * (1 + R2/R1) —> 0.2V = 0.1 * (1+ 10kΩ/10kΩ)

Vout = Vin * (1 + R2/R1) —> min -> 0.1V = 0.1 * (1+ 0Ω/10kΩ), max -> 0.2V = 0.1 * (1+ 10kΩ/10kΩ)

Vout = -Vin*(Rf/Rin) —> -0.2 V= -(0.1V) * (~20kΩ/10kΩ). What we are seeing is different than the Non-Inverting Amp because the voltage out becomes negative therefore it has an inverse amplitude to Vin

Vout = -Vin*(Rf/Rin) —> min -> 0V= -(0.1V) * (0kΩ/~5kΩ) , max -> -0.2V= -(0.1V) * (10kΩ/~5kΩ)

Vout = -Vin*(Rf/Rin), photocell min/max Ω, 1kΩ – 10kΩ —> min -> -0.02V= -(0.1V) * (1kΩ/~5kΩ) , max -> -0.2V= -(0.1V) * (10kΩ/~5kΩ)