Part of a series of articles on. Analytical psychology (sometimes analytic psychology), also called Jungian psychology, is a school of psychotherapy which originated in the ideas of Carl Jung, a Swiss psychiatrist. It emphasizes the importance of the individual psyche and the personal quest for wholeness.
For any application where human oversight is needed, a Standard Stop/Start PB station should be combined with the HOA. The function of a HOA (Hand-Off-Auto) selector switch is to control whether a motor is in hand (manual) mode, auto mode, or off. To operate the motor while hand mode is selected, start and stop push buttons are usually used.
Some older devices instead have a power switch that accomplishes the same thing as a hard power button. A flip of the switch in one direction turns the device on, and a flip in the other turns the device off. Power buttons and switches are usually labeled with I and O symbols.