By changing the voltage input to the tube in the AFM, one can control the position of the cantilever tip.

In a voltage-controlled oscillator, a voltage input controls the resonant frequency.

High stability crystal oscillator references often place the crystal in an oven and use a voltage input for fine control.

When DC input power is applied to a capacitive load, the step response of the voltage input will cause the input capacitor to charge.

The vanes provide regulated voltage input to the angle-of-attack transducers, modified by a stall warning bias box to compensate for flap position.

An analog current loop can be converted to a voltage input with a precision resistor.

In many cases, the common mode voltage can be directly set by a third voltage input.

SW23 (toggle or momentary) is the switch that selects what voltage input the VCO will follow.

Step-up transformer: the voltage output is greater than the voltage input.

Current inputs are less sensitive to electrical noise (i.e. from welders or electric motor starts) than voltage inputs.