The voltage source V on the left drives a Current ( electricity ) | current I around the circuit, delivering electrical energy into the resistor R. From the resistor, the current returns to the source, completing the circuit.

* R < sub > 2 </ sub > and R < sub > 3 </ sub > are resistor values in ohms.

In the monostable multivibrator, the one resistive-capacitive network ( C < sub > 2 </ sub >- R < sub > 3 </ sub > in figure 1 ) is replaced by a resistive network ( just a resistor ).

Ohm's law states that the voltage ( V ) across a resistor is proportional to the current ( I ), where the constant of proportionality is the resistance ( R ).

The term transistor was coined by John R. Pierce as a portmanteau of the term " transfer resistor ".

It consists of the two n-p-n transistors V < sub > 3 </ sub > and V < sub > 4 </ sub >, the " lifting " diode V < sub > 5 </ sub > and the current-limiting resistor R < sub > 3 </ sub > ( see the figure on the right ).

In the middle of the transition, the resistor R < sub > 3 </ sub > limits the current flowing directly through the series connected transistor V < sub > 3 </ sub >, diode V < sub > 5 </ sub > and transistor V < sub > 4 </ sub > that are all conducting.

Resistors are circuit elements that impede the passage of electric charge in agreement with Ohm's law, and are designed to have a specific resistance value R. In a schematic diagram the resistor is shown as a zig-zag symbol.

* The R-2R ladder DAC which is a binary-weighted DAC that uses a repeating cascaded structure of resistor values R and 2R.

Because of the low impedance of the diode when operated like this, resistor R is used to limit current through the circuit.

In the case of this simple reference, the current flowing in the diode is determined using Ohm's law and the known voltage drop across the resistor R ;

A sample schematic with one master ( a microcontroller ), three slave nodes ( an analog-to-digital converter | ADC, a digital-to-analog converter | DAC, and a microcontroller ), and pull-up resistor s R < sub > p </ sub >

With an L / R drive it is possible to control a low voltage resistive motor with a higher voltage drive simply by adding an external resistor in series with each winding.

where k < sub > B </ sub > is Boltzmann's constant in joules per kelvin, T is the resistor's absolute temperature in kelvins, and R is the resistor value in ohms ( Ω ).

The noise source can also be modeled by a current source in parallel with the resistor by taking the Norton equivalent that corresponds simply to divide by R. This gives the root mean square value of the current source as:

Norton's theorem for linear electrical networks, known in Europe as the Mayer – Norton theorem, states that any collection of voltage sources, current sources, and resistors with two terminals is electrically equivalent to an ideal current source, I, in parallel with a single resistor, R. For single-frequency AC systems the theorem can also be applied to general impedances, not just resistors.

In circuit theory, Thévenin's theorem for linear electrical networks states that any combination of voltage sources, current sources, and resistors with two terminals is electrically equivalent to a single voltage source V and a single series resistor R. For single frequency AC systems the theorem can also be applied to general impedances, not just resistors.

The input signal is represented by a Thévenin voltage source, v < sub > s </ sub >, with a series resistance R < sub > s </ sub > and the load is a resistor R < sub > L </ sub >.

There are three basic, linear passive lumped analog circuit components: the resistor ( R ), the capacitor ( C ), and the inductor ( L ).

There is also a smaller negative feedback introduced by the emitter resistor R < sub > E </ sub >.

When the input voltage ( Q1 base voltage ) rises slightly above the voltage across the emitter resistor R < sub > E </ sub > ( the high threshold ), Q1 begins conducting.

If the inverting input is held at ground ( 0 V ) directly or by a resistor, and the input voltage V < sub > in </ sub > applied to the non-inverting input is positive, the output will be maximum positive ; if V < sub > in </ sub > is negative, the output will be maximum negative.

These frequency measurements can be easily taken, and thus the losses which appear as the voltage across the load resistor in the circuit are a periodic function of the applied magnetic flux with a period of Φ < sub > 0 </ sub >.

In some cases ( e. g., when the output of a TTL logic gate needs to be used for driving the input of a CMOS gate ), the voltage level of the " totem-pole " output stage at output logical " 1 " can be increased up to V < sub > CC </ sub > by connecting an external resistor between the V < sub > 3 </ sub > collector and the positive rail.

NMOS logic dissipates power whenever the transistor is on, because there is a current path from V < sub > dd </ sub > to V < sub > ss </ sub > through the load resistor and the n-type network.

This short, intense pulse of current, typically 10 < sup > 9 </ sup >- 10 < sup > 10 </ sup > ion pairs, can be measured as a count event using the voltage developed across an external electrical resistor and can be in the order of volts, thus making further electronic processing simple.

A typical integrated power device is the 2N6282, which includes a switch-off resistor and has a current gain of 2400 at I < sub > C </ sub >= 10A.

At 2. 5V supply voltage the power to drive 3. 5 mA becomes 8. 75 mW, compared to the 90 mW dissipated by the load resistor for an RS-422 signal.

* Terminated in the middle of the upper conductor with a 400 Ohm non-inductive resistor, rated to safely absorb at least 1 / 3 of the applied transmitter power.

The resistor R < sub > 3 </ sub > is there to limit the current through the diodes, and the resistor R < sub > 4 </ sub > minimizes the input voltage offset caused by the comparator's input leakage currents ( see Limitations of real op-amps ).

Consider a divider consisting of a resistor and capacitor as shown in Figure 3.

The role of the base resistor is to expand the negligible transistor input voltage range ( about 0. 7 V ) to the logical " 1 " level ( about 3. 5 V ) by converting the input voltage into current.

SMBus ‘ high power ’ devices and I²C-bus devices will work together if the pull-up resistor is sized for 3 mA.

For comparison, a capacitor stores energy in an electric field, and a resistor does not store energy but rather dissipates energy as heat.

# For a circuit as a whole, such as one containing a resistor in series with a voltaic cell, electrical voltage does not contribute to the overall emf, because the voltage difference on going around a circuit is zero.

Adding a resistor, or better yet, an inductor, between the bridge and capacitor can ensure that current is drawn over a large portion of each cycle and a large current surge does not occur.

By using an NIC as a negative resistor, it is possible to let a real generator behave ( almost ) like an ideal generator, ( i. e., the magnitude of the current or of the voltage generated does not depend on the load ).

This is the approach taken in maintained emergency light fittings ( which in Europe must remain on for 4 hours in the event of a power cut ) where the design remains essentially the same as that used in older NiCd units, but for an increase in the trickle charging resistor value.

A change from one state to another, for example an increase of both temperature and volume, may be conducted in several stages, for example by externally supplied electrical work on a resistor in the body, and adiabatic expansion allowing the body to do work on the surroundings.

Sometimes, with very high Q tuned circuits an inductor is placed in series with the resistor to increase the source impedance of the control voltage so as not to load the tuned circuit and decrease its Q.

This is in contrast to a simple ohmic resistor, which exhibits an increase in voltage under the same conditions.

In the two previous circuits, a decrease in Vbe will cause an increase in voltage across the emitter resistor, which in turn will cause an increase in collector current drawn through the load.

The cathode resistor can be bypassed to reduce or eliminate AC negative feedback and thereby increase gain ; maximum gain is about 60 times.

One way to increase R < sub > D </ sub > is to replace this resistor by an active load, for example, a current mirror.