Gear adaptive variator may be the toothed tranny with the variable transfer ratio which is adapting to the adjustable loading. Unsuccessful attempts of creation of a gear variator had been undertaken repeatedly. The main problem is-maintenance of constant engagement of cogwheels of a variator. The decision of this problem can be based on usage of a kinematic chain with two examples of freedom. Earlier it was proved that kinematic chain with shut contour possesses the effect of power adaptation. The gear variator can be carried out in the kind of the closed differential mechanism. The external variable technological loading Variator Gearbox adjustments the transfer ratio itself without any control system. The gear variator opens essentially new idea of creation of adaptive engineering for machines with variable technological level of resistance (for instance, adaptive gearbox of car). The idea of a equipment variator is founded on discovery «Effect of push adaptation in mechanics» which is definitely released in leading editions of globe press. In the paper the bases of the idea of a gear adaptive variator are shown.
There are different types of DC drive setups with the designation depending upon the foundation of their DC current. This is the case in emergency back-up systems. For example, power plants have a bank of batteries that supply DC current to emergency oil pumps that supply oil to the bearings of a turbine during a crisis shutdown. A second source of DC current could possibly be from a (Motor-Generator) MG established. In cases like this, the motor drives a DC generator that generates the DC current. These first two types of drives provide pure DC current, therefore they do not generate any significant electrically induced indicators when it comes to vibration. The last kind of DC drive, and the one that will be discussed in this paper, uses silicon managed rectifiers (SCRs) to rectify AC current into DC Current. These drives produce a DC signal with AC pulses that match the firing of the SCRs. These pulses or absence thereof in the case of failed SCRs and or gating problems produce vibration signals that can be analyzed to look for the source of the defect. Improper tuning of adjustable speed drives may also generate vibration problems.

Rectification: The first concept that needs to be understood when it comes to DC drives is definitely rectification. Rectification may be the process of switching AC current into DC current. Pictured below can be a fifty percent wave rectifier and the resulting output. Only the positive portion of the current Al passes through the rectifier.