Abstract: The invention relates to a constant voltage dimming power supply for lighting device, which is used for adjusting output voltage regulated by dimmer to realize constant voltage PWM output, including a rectifying circuit performing rectifier filtering to output voltage regulated by dimmer; a constant voltage circuit electrically connected to output end of the rectifying circuit; a constant current load circuit electrically connected to output end of the rectifying circuit; a frequency conversion and protection sampling circuit electrically connected to output end of the constant current load circuit and constant voltage; and a switching circuit for controlling lighting load illumination; the frequency conversion and protection sampling circuit converts an output signal of the constant current load circuit into a duty cycle signal suitable for controlling the switching circuit and detects the output abnormality of the constant voltage circuit in real time, and the switching circuit is controlled to be turned on

Abstract: An LED lamp with constant current dimming drive circuit based on PWM input includes a PWM variable power supply input end, a PWM matching circuit, a voltage rectifying circuit, a DC-DC constant current output circuit and an LED lamp, and the voltage signal of the PWM variable power supply input end is provided by the PWM voltage output power supply, and the PWM variable power supply input end is respectively connected with the PWM matching circuit and the voltage rectifying circuit, and the PWM matching circuit is connected with the enable end of the DC-DC constant current output circuit, and the voltage rectifying circuit is connected to the power supply end of the DC-DC constant current output circuit, and the voltage of the voltage rectifying circuit changes according to the duty ratio of the voltage of the PWM variable power supply input end, and the voltage of the PWM variable power supply input end passes through the voltage dividing resistor of PWM matching circuit and output PWM control signal, and PW

Abstract: A method of monitoring and controlling a freeze drying process in a freeze drying apparatus having walls, shelves and a number of vials or trays positioned on different areas of the shelves and containing product to be freeze dried. One or more vials or trays are selected that are representative of the positions of all of the vials or trays in different areas of the shelves. One or more heat flux sensors are positioned between the selected vials or trays and adjacent portions of the walls and/or shelves. The heat transfer between the selected vials or trays and the adjacent wall or shelf portions is measured during the freezing and drying stages of the freeze drying process.

Abstract: An LED lamp with constant current dimming drive circuit based on PWM input includes a PWM variable power supply input end, a PWM matching circuit, a voltage rectifying circuit, a DC-DC constant current output circuit and an LED lamp, and the voltage signal of the PWM variable power supply input end is provided by the PWM voltage output power supply, and the PWM variable power supply input end is respectively connected with the PWM matching circuit and the voltage rectifying circuit, and the PWM matching circuit is connected with the enable end of the DC-DC constant current output circuit, and the voltage rectifying circuit is connected to the power supply end of the DC-DC constant current output circuit, and the voltage of the voltage rectifying circuit changes according to the duty ratio of the voltage of the PWM variable power supply input end, and the voltage of the PWM variable power supply input end passes through the voltage dividing resistor of PWM matching circuit and output PWM control signal, and PW

Abstract: Disclosed herein are devices and methods for active biofouling control. According to an aspect, a device comprising a surface for contacting a biological material. The device also comprises a mechanism comprising a structure configured to change the surface between a first shape and a second shape. The change from the first shape to the second shape deforms the surface beyond a critical strain for debonding of a fouling agent from the surface when the fouling agent has bonded to the surface in the first shape.

Abstract: A plug-in multifunctional LED power system includes a power supply module, at least one output terminal, a switch module, a trigger conversion module, a compatible circuit module, and a replaceable control chip module. The trigger conversion module includes a first, second and third resistors connected in series from a high level output terminal to a ground. The switch module includes an N-type MOS transistor. The compatible circuit module is used for controlling on-off of the switching module by different control chip modules. The control chip module processes the input signal of the signal access unit and outputs a control signal for controlling the on/off of the switching unit so as to control the operating state of a LED lamp. The plug-in multi-functional LED power supply system can solve the increase of the production costs and the inconvenience for user installation caused by more existing power supply types and different models.

Abstract: An infrared focal plane readout integrated circuit that includes a unit bias circuit, an integrating circuit, and an on-chip analog-to-digital conversion circuit, where the integrating circuit includes a first switch tube, a second switch tube, and an integrating capacitor; an output end of the unit bias circuit is connected to an input end of the first switch tube; an input end of the second switch tube is connected to a set terminal; both an output end of the first switch tube and an output end of the second switch tube are connected to one end of an integrating capacitor and an input end of the on-chip analog-to-digital conversion circuit; the other end of the integrating capacitor is grounded; and the on-chip analog-to-digital conversion circuit includes a first inverter, a second inverter, a third inverter, an exclusive-OR gate, a built-in sequence counter, and a register.

Abstract: A plug-in multifunctional LED power system includes a power supply module, at least one output terminal, a switch module, a trigger conversion module, a compatible circuit module, and a replaceable control chip module. The trigger conversion module includes a first, second and third resistors connected in series from a high level output terminal to a ground. The switch module includes an N-type MOS transistor. The compatible circuit module is used for controlling on-off of the switching module by different control chip modules. The control chip module processes the input signal of the signal access unit and outputs a control signal for controlling the on/off of the switching unit so as to control the operating state of a LED lamp. The plug-in multi-functional LED power supply system can solve the increase of the production costs and the inconvenience for user installation caused by more existing power supply types and different models.

Abstract: An angle adjustment mechanism for LED bar lighting includes a lamp body, two end covers arranged two ends of the lamp body along an axial direction thereof, two lamp frames respectively mounted on the two threading pipes, two wheel gears respectively fixed on the two lamp frames, two outer end caps fixed and covered on the two end covers, respectively, and at least two stopping plates respectively received in the two lamp frames. Each of the two end covers includes a threading pipe extending along the axial direction of the lamp body. Each of the two wheel gears includes a plurality of gear teeth taken along a radial direction thereof and rotating around the threading pipe. Each of the stopping plates provides at least one stopping tooth which is coupling to the gear teeth.

Abstract: An angle adjustment mechanism for LED bar lighting includes a lamp body, two end covers arranged two ends of the lamp body along an axial direction thereof, two lamp frames respectively mounted on the two threading pipes, two wheel gears respectively fixed on the two lamp frames, two outer end caps fixed and covered on the two end covers, respectively, and at least two stopping plates respectively received in the two lamp frames. Each of the two end covers includes a threading pipe extending along the axial direction of the lamp body. Each of the two wheel gears includes a plurality of gear teeth taken along a radial direction thereof and rotating around the threading pipe. Each of the stopping plates provides at least one stopping tooth which is coupling to the gear teeth.

Abstract: A method and apparatus for eliminating or minimizing the non-uniformity of edge vials compared to center vials during freezing or primary drying of product therein in a freeze dryer. A temperature controlled surface is positioned in close proximity to or in contact with the edge vials to control the temperature thereof. The method and apparatus may be used to simulate in a development freeze dryer the conditions of the center and edge vials in a larger batch target freeze dryer.

Abstract: An electrode structure and apparatus for use in measuring oil-water constituents. The electrode structure comprises a first electrode (1) and a second electrode (2). The first electrode (1) has wrapped on the exterior thereof an insulating layer (104). The first electrode (1) and the second electrode (2) are fixed and insulatively connected via a supporting connector body (3). The first electrode (1) comprises multiple tubular conductive segment sub-electrodes (101) arranged along a first direction. Every two adjacent segment sub-electrodes (101) have formed therebetween a first gap. The second electrode (2) is arranged around the first electrode (1), and both are electrically connected to a signal and data processing unit (5).

Abstract: Disclosed herein are devices and methods for active biofouling control. According to an aspect, a device comprising a surface for contacting a biological material. The device also comprises a mechanism comprising a structure configured to change the surface between a first shape and a second shape. The change from the first shape to the second shape deforms the surface beyond a critical strain for debonding of a fouling agent from the surface when the fouling agent has bonded to the surface in the first shape.

Abstract: An electrode structure and apparatus for use in measuring oil-water constituents. The electrode structure comprises a first electrode (1) and a second electrode (2). The first electrode (1) has wrapped on the exterior thereof an insulating layer (104). The first electrode (1) and the second electrode (2) are fixed and insulatively connected via a supporting connector body (3). The first electrode (1) comprises multiple tubular conductive segment sub-electrodes (101) arranged along a first direction. Every two adjacent segment sub-electrodes (101) have formed therebetween a first gap. The second electrode (2) is arranged around the first electrode (1), and both are electrically connected to a signal and data processing unit (5).

Abstract: A tab for soft package lithium battery and its method of plating and application are provided. The tab uses SUS430 stainless steel strip, a copper strip, an aluminum strip or a nickel strip as a substrate. A nickel plating layer is plated on one end of one side of the substrate and a tin plating layer is plated on the nickel plating layer, or the tin plating layer is plated on one end of one side of the substrate directly. The thickness of the nickel plating layer is 0.5-2 um, and the thickness of the tin plating layer is 3-10 um. The tab has a lower manufacturing cost, favorable weldability and appropriate thermal conductivity.