• Contact voltage and complete operation

    1.Contact voltage Although the contacts are in contact, the armature is still not fully attracted (with gaps) by the iron core. Of course, this is not the working pressure value. (Incomplete action) The sound is very low (click) (Figure 1)...

  • Failure of the relay --- bad coil caused by scald

    Skeletal burns stick to the enameled wire or rosin contaminated skeleton sticks to the enameled wire. When the lead pin is pulled, it will cause the enameled wire to be scratched or broken....

  • Failure analysis of the relay --- bad coil resistance

    1. Causes of bad coils Coil disconnection (surface flaws, wound wound flaws, flux adhesion, etc.) Heterogeneous coils (coils of different specifications) Incorrect resistance value (wrong number of turns, wrong wire diameter) Short circuit...

  • Relay suction characteristics

    Dynamic characteristics: When Armature moves to a certain level, the current in Coil decreases not only but not to increase due to the effect of Coil inductance, Armature When the final position is reached, the speed is maximum, and the bac...

  • The mechanical characteristics of the relay are also called

    When the armature of the relay moves, the relationship between the mechanical reaction force Ff and the armature stroke (working air gap) δ F = f (δ) is called the mechanical characteristics of the relay...

  • Relay characteristics and schematics

    Relay characteristics: when the input quantity X reaches a certain value, the output circuit electrical parameter Y produces a jump change 1) When pull-in X Xa, Y is Ymin X≥ Xa, Y mutation is Ymax 2) When releasing X > Xb, Y is Ymax, X≤...

  • Relay action transmission principle

    Regardless of the difference in the action principle and structure of the relay, they are composed of three parts: an induction mechanism (accepting input signals), a transmission mechanism (providing a comparative amount) and an actuator (...

  • The working principle of the relay

    1) Isolation between input and output circuits 2) Signal conversion (from off to on or vice versa) 3) Increase the output circuit (ie switch several loads or switch different power loads) 4) Repeat signal 5) Switch between different voltage...