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Voltage divider. In electronics, a voltage divider (also known as a potential divider) is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). Voltage division is the result of distributing the input voltage among the components of the divider. A simple example of a voltage divider is ...
The Kelvin-Varley voltage divider, named after its inventors William Thomson, 1st Baron Kelvin and Cromwell Fleetwood Varley, is an electronic circuit used to generate an output voltage as a precision ratio of an input voltage, with several decades of resolution. In effect, the Kelvin–Varley divider is an electromechanical precision digital ...
The Thévenin-equivalent voltage V th is the open-circuit voltage at the output terminals of the original circuit. When calculating a Thévenin-equivalent voltage, the voltage divider principle is often useful, by declaring one terminal to be V out and the other terminal to be at the ground point.
In electronics, a current divider is a simple linear circuit that produces an output current (IX) that is a fraction of its input current (IT). Current division refers to the splitting of current between the branches of the divider. The currents in the various branches of such a circuit will always divide in such a way as to minimize the total ...
A potentiometer is a three- terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. [1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential ...
V s = source open circuit or unloaded voltage. V in = voltage applied to the input port by the source. V out = voltage applied to the load by the output port. I in = current entering the input port from the source. I out = current entering the load from the output port. P in = V in I in = power entering the input port from the source.
In the non-inverting amplifier on the right, the presence of negative feedback via the voltage divider R f, R g determines the closed-loop gain A CL = V out / V in. Equilibrium will be established when V out is just sufficient to pull the inverting input to the same voltage as V in. The voltage gain of the entire circuit is thus 1 + R f / R g.
Programmable voltage divider based on JFET VCR. In the circuit on the figure, a non-linearized VCR design, the voltage-controlled resistor, the LSK489C JFET, is used as a programmable voltage divider. The VGS supply sets the level of the output resistance of the JFET. The drain-to-source resistance of the JFET (R DS) and the drain resistor (R 1 ...