ขนาดของแม่เหล็ก
magnetic materials
วิธีการสั่งซื้อ
จำนวนผู้เข้าชมเว็บไซต์






![]() | Today | 13 |
![]() | Yesterday | 44 |
![]() | This week | 13 |
![]() | Last week | 4760 |
![]() | This month | 4818 |
![]() | Last month | 53401 |
![]() | All days | 840185 |
Your IP: 216.73.216.41
MOZILLA 5.0,
Today: November 09, 2025
Permeance Coefficient, Pc: Raio of the magnetic induction, Bd, to its self demagnetizing force , Hd. Pc = Bd/Hd. This is also known as the “load line” or operating point of the magnet, and is useful in estimating the flux output of the magnet in various conditions. As a first order approximation, Bd/Hd = Lm/Lg, where Lm is the length of the magnet, and Lg is the length of an air gap that he magnet is subjected to. Pc is therefore a function of the geometry of the magnetic circuit.














084-756-1414(หากเข้าพบ กรุณาโทรนัดฝ่ายขายล่วงหน้าด้วยค่ะ)