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A logarithmic resistor ladder is an electronic circuit, composed of a series of resistors and switches, designed to create an attenuation from an input to an output signal, where the logarithm of the attenuation ratio is proportional to a binary number that represents the state of the switches.
For a circuit to be modelled with an ideal source, output impedance, and input impedance; the circuit's input reactance can be sized to be the negative of the output reactance at the source. In this scenario, the reactive component of the input impedance cancels the reactive component of the output impedance at the source.
Using current mode, the gain of the DAC may be adjusted with a series resistor at the reference voltage terminal. [8] The current for all bits pass through an equivalent resistance of 2R to ground. The less significant the bit, the more resistors its signal must pass through. At each node each bit's current is divided by two. [9]
The resistance is measured after replacing all voltage- and current-sources with their internal resistances. That means an ideal voltage source is replaced with a short circuit, and an ideal current source is replaced with an open circuit. Resistance can then be calculated across the terminals using the formulae for series and parallel circuits ...
Series RL, parallel C circuit with resistance in series with the inductor is the standard model for a self-resonant inductor. A series resistor with the inductor in a parallel LC circuit as shown in Figure 4 is a topology commonly encountered where there is a need to take into account the resistance of the coil winding and its self-capacitance.
The input resistance of the load stands in series with Rs. Whereas the voltage source by itself was an open circuit , adding the load makes a closed circuit and allows charge to flow. This current places a voltage drop across R S {\displaystyle R_{S}} , so the voltage at the output terminal is no longer V S {\displaystyle V_{S}} .
A series circuit with a voltage source (such as a battery, or in this case a cell) and three resistance units. Two-terminal components and electrical networks can be connected in series or parallel. The resulting electrical network will have two terminals, and itself can participate in a series or parallel topology.
The op-amp non-inverting amplifier is a typical circuit with series negative feedback based on the Miller theorem, where the op-amp differential input impedance is apparently increased to infinity Infinite impedance uses a non-inverting amplifier with A v = 1 {\displaystyle A_{v}=1} .