1 Answer
Transfer impedance is a measure of how much one electrical circuit or component influences the behavior of another circuit or component when connected. It is typically used to characterize the relationship between the input and output of a system, particularly when energy is transferred from one circuit to another.
In simple terms, transfer impedance measures how much voltage is induced in one part of the system when a current flows through another part.
### Formula:
Transfer impedance \( Z_T \) is given by the ratio of the output voltage to the input current:
\[
Z_T = \frac{V_{\text{out}}}{I_{\text{in}}}
\]
Where:
- \( V_{\text{out}} \) is the output voltage at the location where the transfer is measured.
- \( I_{\text{in}} \) is the input current flowing into the system.
### Units:
The unit of transfer impedance is **Ohms (Ω)**, the same as regular impedance, since it involves a voltage-to-current ratio.
### Application:
Transfer impedance is used in various fields like:
- **Electromagnetic compatibility (EMC)**: to measure how much noise (voltage) is induced in a system when there is current flowing through nearby components.
- **Signal integrity**: to describe how signals are affected by transmission lines, especially when they are routed in close proximity to other parts of a system.
In short, it's a way of understanding how one part of a circuit affects another, specifically in terms of voltage and current transfer.
In simple terms, transfer impedance measures how much voltage is induced in one part of the system when a current flows through another part.
### Formula:
Transfer impedance \( Z_T \) is given by the ratio of the output voltage to the input current:
\[
Z_T = \frac{V_{\text{out}}}{I_{\text{in}}}
\]
Where:
- \( V_{\text{out}} \) is the output voltage at the location where the transfer is measured.
- \( I_{\text{in}} \) is the input current flowing into the system.
### Units:
The unit of transfer impedance is **Ohms (Ω)**, the same as regular impedance, since it involves a voltage-to-current ratio.
### Application:
Transfer impedance is used in various fields like:
- **Electromagnetic compatibility (EMC)**: to measure how much noise (voltage) is induced in a system when there is current flowing through nearby components.
- **Signal integrity**: to describe how signals are affected by transmission lines, especially when they are routed in close proximity to other parts of a system.
In short, it's a way of understanding how one part of a circuit affects another, specifically in terms of voltage and current transfer.