摘要:
A wireless audio transmitter is capable of converting audio signals into wireless Bluetooth signals. The transmitter comprises an ADC converting input analog audio signals into digital signals. A CPU outputs original data complying with Bluetooth communication protocols. The original data are sequentially processed by a Bluetooth base band processor and a Bluetooth RF processor, and are converted into RF signals. Finally, the RF signals are transmitted in a wireless microwave manner by an antenna.
摘要:
A multiple-phase power converter comprises a non-isolated, double-ended transformer having a plurality of windings, a high-side switch portion, a low-side switch portion, an output portion, and a controller. The high-side switch portion includes a first power switch connecting an input voltage source (VIN) to a virtual phase node through a first winding of the plurality of windings and a second power switch connecting the input voltage source to the virtual phase node through a second winding of the plurality of windings. The first and second windings are arranged with opposite polarity. The low-side switch portion includes a third power switch connecting the virtual phase node to ground through a third winding of the plurality of windings and a fourth power switch connecting the virtual phase node to ground through a fourth winding of the plurality of windings. The third and fourth windings are arranged with opposite polarity. The output portion includes an output inductor connecting the virtual phase node to an output terminal providing an output voltage (VOUT). The controller is adapted to control operations of the first, second, third and fourth power switches such that the first and second power switches are enabled in respective alternating phases. The third switch is disabled when the second switch is enabled so that current flows concurrently through both the second and fourth windings to the output inductor during a first phase, and the fourth switch is disabled when the first switch is enabled so that current flows concurrently through the first and third windings to the output inductor.
摘要:
A multiphase converter has a plurality of phase circuits and a plurality of phase control circuits. Each phase circuit has a switch having a control terminal, and the control terminal of the switch may be configured to receive a drive signal. Each phase control circuit may be corresponding to one of the phase circuits, and each phase control circuit may be configured to provide a phase control signal to adjust an ON-time period or a reference signal for the corresponding phase circuit. The phase control signal may be responsive to the drive signal of the corresponding phase circuit.
摘要:
Enables a collaborative information sharing system configured to enable distally located users to quickly, conveniently and simultaneously share information such as images of websites, applications or any other information with each other in real-time, for example to enable multiple distally located users to shop, teach, learn or otherwise view shared information and communicate in a secure and coordinated fashion that is not possible with existing co-browsing or screen sharing technologies.
摘要:
A light emitting diode (LED) driver circuit controls switching of an output transistor. The LED driver circuit monitors inductor current flowing through an output inductor that is coupled to one or more LEDs. In response to detecting that the inductor current has reached a peak value, the LED driver circuit switches OFF the output transistor. The LED driver circuit switches ON the output transistor in response to detecting zero crossing of the inductor current. The LED driver circuit may detect zero crossing of the inductor current from a gate voltage of the output transistor by detecting for a negative spike.
摘要:
A connector assembly according to embodiments of the present disclosure is advantageously configured to allow a sensor connector to straightforwardly and efficiently join with and detach from a patient cable connector. Further, embodiments of the connector assembly advantageously reduce un-shielded area in an electrical connection between a patient cable and a sensor connector. In addition, embodiments of the connector assembly advantageously increase the shielding of detector signals coming from the patient sensor to the monitor.
摘要:
The embodiment of invention discloses an average input current limit method and apparatus thereof. The apparatus comprises a switching circuit, a current average circuit and a current limit circuit. The current average circuit samples the input current of the switching circuit and generates a signal representative of the average value of the input current. The current limit circuit limits the signal so as to limit the average value of the input current.
摘要:
The present disclosure discloses an energy harvest system converting an AC source provided by an energy harvester to a desired voltage. The AC source is boosted to the desired voltage by a bi-directional booster converter comprising fourth controllable transistors configured in an H-bridge, and stored by a storage capacitor. The desired voltage is then used to power various loads.
摘要:
One embodiment of the present invention provides an attachable timepiece, comprising: an upper chamber forming a housing for timepiece elements, the upper chamber including a front face having a time display; a lower chamber that is detachable from the upper chamber by way of a locking system; and a means for attaching the timepiece to an object.