Abstract: A cordless benchtop dispenser for dispensing cleaning liquids includes a container, a housing, and a coupler body structured to effectively provide a single-use container, mitigating possible contamination or hygiene risks associated with users refilling the container as well as operation risks associated with users refilling the container with incompatible liquids or chemicals. In some embodiments, a benchtop dispenser is provided wherein pressing the coupler body onto a neck of the container causes the coupler body to be permanently fixed to the neck. In some embodiments, a benchtop dispenser includes a photoelectric sensor that triggers the controller to operate the motor for a predetermined period, and subsequently triggers the controller to start a timer and actuate the indicator based on elapsed times measured by the timer.

Abstract: A cordless benchtop dispenser for dispensing cleaning liquids includes a container, a housing, and a coupler body structured to effectively provide a single-use container, mitigating possible contamination or hygiene risks associated with users refilling the container as well as operation risks associated with users refilling the container with incompatible liquids or chemicals. In some embodiments, a benchtop dispenser is provided wherein pressing the coupler body onto a neck of the container causes the coupler body to be permanently fixed to the neck. In some embodiments, a benchtop dispenser includes a photoelectric sensor that triggers the controller to operate the motor for a predetermined period, and subsequently triggers the controller to start a timer and actuate the indicator based on elapsed times measured by the timer.

Abstract: A control circuit is configured to sense an AC input voltage of a power factor correction (PFC) power circuit in a switching power converter, provide a control signal having an on-time and an off-time to at least one power switch of the PFC power circuit, and in response to detecting a peak voltage of the AC input voltage, increase the on-time of the control signal based on the sensed AC input voltage during an interval that begins with the peak voltage of the AC input voltage and ends with the next zero crossing following the peak voltage of the AC input voltage to improve a power factor of the switching power converter. Other example switching power converters, PFC power circuits and control circuits for controlling one or more power switches are also disclosed.

Abstract: According to some aspects of the present disclosure, example interleaved power supplies and corresponding control methods are disclosed. Example interleaved power supplies include an input terminal, an output terminal, and a first phase circuit coupled between the input terminal and the output terminal. The first phase circuit includes a first inductor and a first switch. The power supply also includes a second phase circuit coupled between the input terminal and the output terminal. The second phase circuit includes a second inductor and a second switch. The power supply further includes at least one current sensor, and a controller operable to control the first phase circuit and the second phase circuit in an interleaved mode when the sensed output current is below a current threshold and to control the first phase circuit and the second phase circuit in an in-phase mode when the output current is above the current threshold.

Abstract: According to some aspects of the present disclosure, example interleaved power supplies and corresponding control methods are disclosed. Example interleaved power supplies include an input terminal, an output terminal, and a first phase circuit coupled between the input terminal and the output terminal. The first phase circuit includes a first inductor and a first switch. The power supply also includes a second phase circuit coupled between the input terminal and the output terminal. The second phase circuit includes a second inductor and a second switch. The power supply further includes at least one current sensor, and a controller operable to control the first phase circuit and the second phase circuit in an interleaved mode when the sensed output current is below a current threshold and to control the first phase circuit and the second phase circuit in an in-phase mode when the output current is above the current threshold.

Abstract: A control circuit is configured to sense an AC input voltage of a power factor correction (PFC) power circuit in a switching power converter, provide a control signal having an on-time and an off-time to at least one power switch of the PFC power circuit, and in response to detecting a peak voltage of the AC input voltage, increase the on-time of the control signal based on the sensed AC input voltage during an interval that begins with the peak voltage of the AC input voltage and ends with the next zero crossing following the peak voltage of the AC input voltage to improve a power factor of the switching power converter. Other example switching power converters, PFC power circuits and control circuits for controlling one or more power switches are also disclosed.