Linear Circuits

Linear Amplifier

• Circuits where Voltage and Current are linearly related
• They kinda satisfy linearity
• Have homogeneity (scales linearly)
  • If you scale the voltage of smth, the current scales with the same coefficient
• Have superposition (additivity)
  • You can kinda get the voltage diff across a component by adding up the sub-circuits it's a part of
  • The response of a circuit (either V or I) to a sum of inputs (independent sources) is the sum of responses to each input applied separately
  • Set the other sources to 0
  • This can actually be helpful, since you can determine some value by considering each source separately
• These properties do not hold for power calculations