How much do you know about transparent meter boxes?

The greater the power of the transparent meter box, the greater the torque, and the faster the aluminum disk rotates. When the aluminum disk rotates, it is also affected by the braking torque generated by the permanent magnet, and the direction of the braking torque is opposite to the active torque; The brake torque is proportional to the rotating speed of the aluminum disc. The faster the aluminum disc rotates, the greater the brake torque; When the active torque and braking torque reach a temporary balance, the aluminum disc will rotate at a constant speed; The electrical energy consumed by the load is proportional to the number of revolutions of the aluminum disk. When the aluminum disk rotates, it drives the counter to indicate the electrical energy consumed, which is a simple process of working in the transparent meter box;