Abstract: Exemplary power systems for dynamically controlling a dispenser drive motor for dispensing soap, sanitizing or lotion. An exemplary soap, sanitizing or lotion dispenser includes a housing, a receptacle for receiving a container for holding a soap, sanitizing or lotion, a container of soap, sanitizing or lotion and a pump secured to the container. The exemplary soap, sanitizing or lotion dispenser includes a power source, a motor and an actuator that couples the motor to the pump. In addition, the exemplary soap, sanitizing or lotion dispenser includes pulse width modulation circuitry in circuit communication with the power source and the motor. Movement of the actuator one actuation cycle dispenses a dose of soap, sanitizing or lotion. The pulse width modulation circuitry provides a plurality of voltage pulses to the motor to move the actuator one actuation cycle.

Abstract: A multi-track tape player having at least one program or commercial message recorded on each of a plurality of the tracks thereof is connected to a source of background music by a control system which, periodically, in response to a control signal from a timing mechanism, activates successive ones of the tracks of the tape player. As the commercial message or program commences, the background material is caused to fade out until the completion of the program, whereupon the background returns. A separate volume control for the tape player and background material allows the commercial message to be played at a higher volume than the background material. Further the control system includes various special selection circuits and overrides which adapt the control system to skip tracks, cancel a program being played, or start a program regardless of the timing sequence of the timing means.