摘要:
A physiotherapy device and a method for controlling the physiotherapy device are provided. The physiotherapy device may include an electric stimulator capable of generating electric pulses, a heating electrode sheet capable of attaching to a user's body, and a connecting component configured to connect with the heating electrode sheet via a plurality of fastening components and configured to connect with the electric stimulator via an electric pulse transmission cable. Furthermore, each fastening component may include a first fastener and a second fastener that are connected with each other. The plurality of fastening components may include a heating fastening component, a heat measuring fastening component, and at least one electric pulse fastening component, the heating fastening component transmits current to the heating electrode sheet so as to provide heat, and the heat measuring fastening component measures a temperature of the heating electrode sheet.
摘要:
An LLC power converter comprises a switching stage and a resonant tank, the switching stage configured to switch an input power at a switching frequency to apply a switched power to the resonant tank, and the resonant tank includes a resonant inductor, a resonant capacitor, and a parallel inductance. A transformer has a primary winding connected to the resonant tank and a secondary winding. A synchronous rectifier (SR) switch is configured to selectively switch current from the secondary winding to supply a rectified current to a load. An RC filter includes a filter capacitor and a filter resistor connected across the SR switch, with the filter capacitor defining a filter capacitor voltage thereacross. A rectifier driver is configured to drive the SR switch to a conductive state in response to the filter capacitor voltage being less than a threshold value.
摘要:
An inductor-inductor-capacitor (EEC) power converter with high efficiency for Electric Vehicle (EV) on-board low voltage DC-DC chargers (LDC) is disclosed. The converter includes a switching bridge with a plurality of bridge switches and configured to generate an output from a direct current input voltage. An EEC tank circuit is coupled to the switching bridge and includes a resonant inductor and a resonant capacitor and a parallel inductor connected between the resonant inductor and the resonant capacitor. The tank circuit is configured to output a resonant sinusoidal current from the output of the switching bridge. At least one transformer has at least one primary winding in parallel with the parallel inductor of the inductor-inductor-capacitor tank circuit and at least one secondary winding. At least one rectifier is coupled to the at least one secondary winding and is configured to output a rectified alternating current.
摘要:
A wearable eyebrow-irradiating device includes a main irradiation body, a circumferential light-shielding lining and a fastening headband. The main irradiation body, worn on user's head, has at least one lighting component for projecting respective eyebrow-growth stimulating beams onto corresponding eyebrow-growing zones upon when the main irradiation body is fitted onto the head. The circumferential light-shielding lining, mounted fixedly at the main irradiation body by surrounding the lighting component, is to shield the eyebrow-growing zone, so that an eye can be isolated from the neighboring eyebrow-growing zone. The fastening headband, connecting the main irradiation body, is to wear the main irradiation body tightly onto the head, and to elastically deform the circumferential light-shielding lining so as to completely shield the eyebrow-growing zone and thus to prevent the eyebrow-growth stimulating beam from irradiating the eye.
摘要:
A flow control apparatus includes a flow control signal generation device for generating a DC control signal based on an audio signal and at least one proportional valve. The flow control signal generation device includes an audio receiving module, a filter rectifier module, a microprocessor and a proportional valve control signal generation module. The filter rectifier module generates at least one DC audio signal by filtering the audio signal provided by the audio receiving module. The microprocessor generates a plurality of period attenuated values based on the DC audio signal. The proportional valve control signal generation module filters the audio signal, attenuates the signal based on the period attenuated values, and then performs filtering and rectification processing to generate the DC control signal, such that the proportional valve may control the opening ratio of the proportional valve based on the DC control signal.
摘要:
A hybrid rectifier that works as either a hybrid full bridge or a voltage doubler. Under 220 V AC input condition, the hybrid rectifier operates in full bridge mode, while at 110 V AC input, it operates as voltage doubler rectifier. The hybrid rectifier may be used with a DC-DC converter, such as an LLC resonant converter, in a power supply. With this mode switching, the LLC converter resonant tank design only takes consideration of 220 V AC input case, such that the required operational input voltage range is reduced, and the efficiency of the LLC converter is optimized. Both the size and power loss are reduced by using a single stage structure instead of the conventional two-stage configuration.
摘要:
In accordance with embodiments disclosed herein, there are provided apparatuses, systems and methods for implementing upstream power control for DSL communications. For example, such a system may include means for: dividing a plurality of DSL lines into a first group of DSL lines and a second group of DSL lines based on characteristics common to each of the DSL lines within the respective first and second groups; determining attainable upstream data rates for the first and second groups of DSL lines according to the characteristics of each group; selecting upstream power control parameters to apply to each of the first and second groups of DSL lines based on the attainable upstream data rates determined; and instructing the DSL lines of the first and second groups to adopt the selected upstream power control parameters. Other related embodiments are disclosed.
摘要:
A system for encoding video data calculates a need parameter for an encoder and then adds a predetermined need bias value to the need parameter. The bias value is added without first determining video source complexity. The system then determines whether the input video comprises static video. Thereafter, the need parameter bias value is scaled in response to a determination that the input video includes the static video.
摘要:
The present invention provides a light emitting device power supply circuit with dimming function and a control circuit thereof. The light emitting device power supply circuit includes: a phase-cut dimming circuit, a rectifier circuit, a transformer circuit, and a control circuit. The transformer circuit includes an auxiliary winding, which is coupled to a primary winding, for generating a bleeder current to keep a conduction current higher than a holding current and prevent the phase-cut dimming circuit from turning OFF when the phase-cut dimming circuit operates in conductive phase. The control circuit includes a waveform analysis circuit, a bleeder current control circuit, and a bleeder current source. The bleeder current source includes a linear regulator or a variable current source. The bleeder current source controls the bleeder current so that the bleeder current is generated in a continuous and non-switching manner within the conductive phase.