71 results about "Capacitive power supply" patented technology

A main power source supplies current through path impedance to a power terminal of an integrated circuit device under test (DUT). The DUT's demand for current at the power input terminal temporarily increases following edges of a clock signal applied to the DUT during a test as transistors within the IC switch in response to the clock signal edges. To limit variation (noise) in voltage at the power input terminal, an auxiliary power supply supplies an additional current pulse to the power input terminal to meet the increased demand during each cycle of the clock signal. The magnitude of the current pulse is a function of a predicted increase in current demand during that clock cycle, and of the magnitude of an adaption signal controlled by a feedback circuit provided to limit variation in voltage developed at the DUT's power input terminal.

A dimmer control system has a communication control loop that connects a master unit in series with a plurality of remote units, and it is superimposed in series on the dimmer load line so as to allow two-way communication between the master unit and remote units without affecting the operation of the load. Communications from the master to the remote units are encoded in loop current fluctuations, whereas communications from any remote to the master unit are encoded in loop voltage fluctuations. The master unit has a switched power supply, for use during normal LOAD ON operation, in tandem with a capacitive power supply, for use during LOAD OFF operation of the control units so as to minimize hum. The master unit power supply circuit provides an output rail voltage comprised of a reference voltage for the load superimposed with a control loop voltage for the voltage drop across the series-connected remote units. The master unit has a POWER OFF detection circuit and a non-volatile memory for storing system status information, so that when power is restored, the system can be restored to its former power level. The switch units are formed with a cover frame mounting a switch plate on a hinge axis allowing ON / OFF movement of an opposing side thereof. An array of LED light pipes is mounted in the switch plate aligned with the hinge axis, in order to minimize displacement of the light pipes during actuator movement.

A capacitive power supply including an input section having input terminals for connection to an AC-mains supply, and a capacitive coupling, a rectification section coupled via the capacitive coupling to the input terminals, and an output section coupled to the rectification section, the output section including output terminals, for providing an output voltage to a load, a first chain including a charge storage facility, and a second chain arranged in parallel to the first chain, and including an output voltage limiting facility, the capacitive power supply further including an inrush current limiting facility, wherein the output terminals are connected to respective terminals of the output voltage limiting facility, and the DC-conducting series impedance has a resistive component with a resistive value of at least 0.2 times a resistive value of the first chain.

The invention relates to the field of electronic communication systems. More specifically, the invention relates to antenna devices (ports) for high-speed, short-range, capacitive wireless devices that can be used for stream data and power supply transmission between two adjacent electronic devices, modules, etc. The differential capacitive antenna ports for the wireless capacitive signal reception and transmission, comprise a capacitive transmission port configured to generate electric fields that represent transmitted signals with at least one pair of transmitting terminals, with conductive working surfaces connected to the port inputs at the input feed points, and a capacitive reception port configured to detect electrical fields that represent transmitted signals with at least one pair of receiving terminals, with conductive working surfaces connected to the port outputs at the output feed points where terminals' conductive working surfaces of capacitive ports are positioned to ensure that the conditional straight line crossing the middle of the working surfaces of at least one pair of receiving terminals is approximately perpendicular to the conditional straight line passing through the middle of the working surfaces of at least one pair of transmitting terminals, or that the conditional straight line passing through the output feed points from the working surfaces of at least one pair of receiving terminals is approximately perpendicular to the conditional straight line passing through the input feed points to the working surfaces of at least one pair of transmitting terminals. Differential capacitive antenna ports for the wireless capacitive signal reception and transmission are also configured for a wireless capacitive power supply reception and transmission, both by means of a separate channel and without it.