====== Inductance ======


===== High vs. Low Permeability Core Comparison =====

^ Feature ^ High Permeability (μ) ^ Low Permeability (μ) ^
| **Inductance per turn** | High | Low |
| **Saturation Current (I_sat)** | Low (saturates easily) | High (resists saturation) |
| **Knee** | Sharp and abrupt | Gradual and soft |
| **Core Losses (AC/Ripple)** | Higher (high AC flux density) | Lower (flatter magnetization slope) |
| **Winding (Copper) Losses** | Lower (requires fewer turns) | Higher (requires more turns) |
| **Typical Materials** | High-nickel alloys, MnZn ferrites | Powdered iron, gapped ferrites, Kool Mμ |

{{ :electronics:saturationscope.jpg?400 |}}

===== Saturation current =====
In the middle of the knee

===== Inductor value =====
Inductor value can be calculated as follows:
  H = V * s / A
  where H is Henry, V is voltage over inductor, s is time, A is current at time is s.

===== Formula =====
  v = L * (di/dt)