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Metal-oxide varistor manufactured by Siemens & Halske AG. Modern varistor schematic symbol, which is the same as a thermistor symbol [1]. A varistor (a.k.a. voltage-dependent resistor (VDR)) is a surge protecting electronic component with an electrical resistance that varies with the applied voltage. [2]
Universal had a number of industry "firsts", including such products as the "Dynamic Variable Resistance" technology that varied the resistance applied to muscle groups by an exercise machine throughout the entire range of motion. However, from the 1980s onward, Universal faced increasing competition from Nautilus and other rivals.
Various resistor types of different shapes and sizes. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
The device consisted of an elastic fluid-filled collapsible-tube mounted inside a chamber filled with air. The static pressure inside the chamber was used to control the degree of collapse of the tube, so providing a variable resistor. This resistance was used to simulate TPR, or total peripheral (vascular) resistance.
Parasitic resistance is a more general term, of which it is usually assumed that contact resistance is a major component. William Shockley [ 1 ] introduced the idea of a potential drop on an injection electrode to explain the difference between experimental results and the model of gradual channel approximation.
Commonly used equipment for resistance training include free weights—including dumbbells, barbells, and kettlebells—weight machines, and resistance bands. [43] Resistance can also be generated by inertia in flywheel training instead of by gravity from weights, facilitating variable resistance throughout the range of motion and eccentric ...
Variable resistance training relies upon adjusting resistance for stronger and weaker parts of a lift. [147] Any given movement has a strength phase sequence which involves moving through phases where a person is relatively stronger or weaker. This is commonly called a ‘strength curve’ which refers to the graphical representation of these ...
where is the resistance of the conductive nano-particles and , are experimentally determined factors that depend on the interface material between the conductive polymer and the electrode. Finally the expressions relating sensor current I {\displaystyle I} with V F S R {\displaystyle V_{FSR}} are piecewise functions just as the Simmons ...