The common feature of all jog circuits is that they prevent the ___ from operating.

Jog circuits are designed to provide short bursts of operation to a motor, allowing for precise control in applications such as positioning. The primary function of a jog circuit is to enable the operator to momentarily activate the motor without allowing the motor to run continuously. This is accomplished by the design of the control circuit, where the common feature is that the systems involved do not engage the holding circuit.

A holding circuit typically allows a device to remain energized once its control switch is activated. However, in a jog circuit, once the control (such as a pushbutton) is released, the connection to the holding circuit is broken, preventing the motor from continuing to operate. This ensures that the motor only operates while the button is actively pressed, allowing for controlled and safe operation.

In this context, the option that fits correctly with the function of the jog circuit is the holding circuit, as it specifically addresses how the jog mechanism interrupts the continuous operation of the motor system.