Abstract: A collapsible tube squeezing device includes a tubular member and a rotary member. A tubular wall of the tubular member has a slit which extends in an axial direction through two opened ends. The rotary member has a tubular shaft rotatably disposed in the tubular wall about an axis, a handle connected to a shaft end for a manual rotational operation, and a centered member connected to an opposite shaft end, and configured to be kept and centered along the axis. A shaft wall of the tubular shaft is coaxial with and spaced apart from the tubular wall, and has a slot for a sealed end of a collapsible tube to be inserted thereinto.

Abstract: A light emitting device driver apparatus includes: an inductor; a power switch which switches the inductor to convert an input power to an output current for driving a light emitting device circuit; and a conversion control circuit. When a dimming signal exceeds a first dimming threshold, a reference current signal is generated according to the dimming signal, and a switch control signal controls the power switch according to a first PWM signal, such that the output current corresponds to the level of the dimming signal. When the dimming signal does not exceed the first dimming threshold, the reference current signal is clamped to a level corresponding to the first dimming threshold, and a second PWM signal is generated according to the dimming signal, wherein the second PWM signal enables the first PWM signal to generate the switch control signal to control the power switch.

Abstract: A light emitting device driver apparatus includes: an inductor; a power switch which switches the inductor to convert an input power to an output current for driving a light emitting device circuit; and a conversion control circuit. When a dimming signal exceeds a first dimming threshold, a reference current signal is generated according to the dimming signal, and a switch control signal controls the power switch according to a first PWM signal, such that the output current corresponds to the level of the dimming signal. When the dimming signal does not exceed the first dimming threshold, the reference current signal is clamped to a level corresponding to the first dimming threshold, and a second PWM signal is generated according to the dimming signal, wherein the second PWM signal enables the first PWM signal to generate the switch control signal to control the power switch.

Abstract: A collapsible tube squeezing device includes a tubular member and a rotary member. A tubular wall of the tubular member has a slit which extends in an axial direction through two opened ends. The rotary member has a tubular shaft rotatably disposed in the tubular wall about an axis, a handle connected to a shaft end for a manual rotational operation, and a centered member connected to an opposite shaft end, and configured to be kept and centered along the axis. A shaft wall of the tubular shaft is coaxial with and spaced apart from the tubular wall, and has a slot for a sealed end of a collapsible tube to be inserted thereinto.