A log pot can also be simulated with a linear pot and an external resistor.

Scale factor is adjustable by an external resistor connected to SF and - Vs.

An external resistor or other control devices can be connected in the rotor circuit.

This current produces a varying voltage across an external resistor which is amplified to produce a usable output signal.

The fixed bias circuit is modified by attaching an external resistor to the emitter.

An external, variable resistor controls the motor speed.

Usually, this is provided by an external resistor upstream from the VR tube.

Some external pull-up resistors may be needed to use a 6821 to replace a 6822 in a CoCo for normal keyboard operation.

However, the power dissipated by an external resistor between the two output terminals is the same regardless of how the internal circuit is represented.

A logarithmic potentiometer can also be simulated (not very accurately) with a linear one and an external resistor.