271 results about "AC adapter" patented technology

A multi handset telephone system with a wireless telecom / doorbell module. The telecom / doorbell module has similar electronics as a cordless handset that includes audio and RF link with a base unit. A speakerphone functionality of a wireless telecom / doorbell audio processor is used to provide an intercom audio conversation. The wireless intercom / doorbell module is battery powered that is either charged by an AC adapter or by an existing doorbell wiring. The wireless intercom / doorbell module also work in parallel with the existing bell wiring. When a page key is pressed, the module pages the telephone system and shorts the doorbell wiring to make an existing bell ring. The doorbell module is coupled with a camera.

A constant voltage / constant power AC adapter converts AC voltage to DC voltage to provide power to a plurality of loads. The adapter's output characteristic is approximately a constant voltage as long as the output current draw by the loads is less than a threshold (e.g. a safety threshold for the adapter). If, however, the power draw on the adapter is such that the output current exceeds the threshold, the adapter then decreases its output voltage to maintain the power draw at a safe level. One or more loads that draw power from the adapter may be adapted to detect a drop in the AC adapter's output voltage. When such a voltage drop is detected, that information tells the load that too much current is being drawn from the adapter and that the load should throttle back (e.g., reducing battery charge current, CPU clock frequency, display brightness, etc.).

An adapter for a power tool powered by a detachable battery pack which adapter includes a connector configured to detachably connect the adapter directly to the power tool, an adapter controller, at least one memory and / or storage device in communication with the adapter controller and configured to store maintenance information concerning the battery pack or to store maintenance information concerning the battery pack and the power tool, at least one communication port configured to transmit electrical communications, including said maintenance information, from the adapter controller to a controller located in the power tool and vice versa, and a transmitter configured to wirelessly transmit the maintenance information to an external device.

A handy electric nailing gun includes a firing pin, a firing spring for pushing the firing pin to drive nails into workpiece, an output gear rotatable by a motor through a transmission gear set to retract the firing pin during the first half run of each rotation cycle and to release the firing pin during the second half run of each rotation cycle, and three power switches electrically connected in series between the motor and the power source (AC adapter / rechargeable battery) for operation by the user to control the operation of the motor.

System and method for additional amusement, entertaining and surprising visual or audible reward provided upon completing the reconstructing of a two-dimensional or three-dimensional jigsaw puzzle. The puzzle pieces include conductive pads connected by a conductor such as a wire, a metallic strip or a conductive paint, so that upon assembling the puzzle, the pads are in contact to form a continuous conductive path. The frame or the puzzle pieces include a battery (or an AC adapter) and a visual or audible signaling device operating upon sensing the continuity of the conductive path. Each of the puzzle pieces may include three or more conductive pads, allowing for the forming two or more isolated or connected distinct conductive paths. The conductive path can further affect a time measurement and its related display for timing the puzzle solving.

An AC / DC adapter in which an AC to DC converter is incorporated in a multiple outlet wall adapter. The AC / DC adapter includes at least one standard AC plug receptacle and at least one DC receptacle. Electronic devices which require DC power can be plugged into to the AC / DC adapter by a power cord having a universal DC plug at one end and a connector or plug specific to the make and / or model of the electronic device at the other end. The universal DC plug corresponds with the DC receptacle provided on the AC / DC adapter. The adapter may be formed as one integrated unit or as a modular assembly which includes an AC module and a DC module. In the assembly, the AC and DC modules are constructed so that they can be fitted together and used as one conveniently sized unit, but modules can also be used independently of the other.

A power management topology for portable electronic devices that includes a feed-enabled AC / DC adapter that receives feedback data from a charge controller associated with the portable device. The feedback data can include battery charging current, battery voltage, or power requirements of the portable device. Using the feedback data, the external AC / DC adapter can adjust the DC output to meet the charging requirement of the battery and / or the power requirements of the portable device.

A replacement battery pack for an electronic device has a power storage section having a secondary battery. A power input section has at least one power connector for receiving electric power for charging the secondary battery while powering the electronic device. A power output / input section has an output terminal for receiving electric power from the power input section and for electrical connection to a connector of the electronic device to power the electronic device, and an input terminal for connection to an external power source for directly charging the secondary battery while the output terminal is disconnected from the connector of the electronic device. An input power switch circuit selectively inputs electric power to the power output / input section either from the power input section when the electric power is available therefrom or from the power storage section when the electric power is unavailable from the power input section.

The battery pack updating method updates firmware stored in internal control circuit memory 24 via an update signal sent from a main device 1 that supplies power. When battery pack memory is updated, an AC adapter 3 is connected to the main device, and power is supplied to the main device from the AC adapter. The updating method transmits a charging and discharging blocking signal from the main device to the battery pack 2 control circuit 21 via a communication line 19. The charging and discharging blocking signal stops discharge from the battery pack 2 rechargeable battery 20, and stops charging of the rechargeable battery 20. With rechargeable battery 20 discharging and charging to and from the main device stopped by the charging and discharging blocking signal, the updating method transmits update data from the main device to the battery pack 2 control circuit 21 to update memory 24.

A power management topology for portable electronic devices that includes a feed-enabled AC / DC adapter that receives feedback data from a charge controller associated with the portable device. The feedback data can include battery charging current, battery voltage, or power requirements of the portable device. Using the feedback data, the external AC / DC adapter can adjust the DC output to meet the charging requirement of the battery and / or the power requirements of the portable device.

A handy electric nailing gun includes a firing pin, a firing spring for pushing the firing pin to drive nails into workpiece, an output gear rotatable by a motor through a transmission gear set to retract the firing pin during the first half run of each rotation cycle and to release the firing pin during the second half run of each rotation cycle, and three power switches electrically connected in series between the motor and the power source (AC adapter / rechargeable battery) for operation by the user to control the operation of the motor.

A system may include an electronic device configured to consume a supply current; an AC to DC adapter configured to be coupled to the electronic device, wherein the AC to DC adapter has a maximum rated output current; a battery configured to be coupled to the electronic device; DC to DC converter configured to be coupled to the battery and the electronic device; and a controller configured to couple the AC to DC adapter to the electronic device, the controller further configured to couple the DC to DC converter to the battery and the electronic device when the supply current exceeds the maximum rated output current of the AC to DC adapter.

A digital picture frame comprised of a display screen (2), a front bezel (1) and an image reader (8) which accommodates various image input (23). The device also has a wireless transceiver (9) provided so a user can download digital images directly from a LAN. The device has easy to use controls to allow the user to manipulate the images to his or her preference. The device is powered by batteries or an AC adapter (7) or (35). An interchangeable frame (28) allows the user to coordinate the frame with his or her personal style while an optional light sensor (31) permits automatic shut off of the device when light is low or not present. Built-in color correction and scaling features allow for further ease of use. The device can stand on its own or be mounted on a wall.

A wireless speaker assembly is disclosed. The wireless speaker assembly comprises a housing and an electrical plug comprising one or more prongs, where those one or more prongs can be disposed within the housing. The wireless speaker assembly further comprises an AC adapter interconnected to the electrical plug, where that AC adapter can convert AC power to DC power. The wireless speaker assembly further comprises a receiver circuit disposed within the housing and an interconnected antenna disposed within said housing, where the antenna in combination with the receiver circuit can receive Bluetooth compliant wireless signals. The wireless speaker assembly further comprises at least one speaker disposed within the housing, where the at least one speaker receives an audio signal produced by the receiver circuit. Applicant's wireless speaker assembly does not comprise any wires or cables extending outwardly from the housing.

Disposed in a secondary side circuit and is connected to a constant voltage control circuit (22), to an overcurrent detection circuit (24), and to an overvoltage detection circuit (26), a photocoupler control circuit (28) controls a photocoupler (IC1) so as to feed a constant voltage detection control signal as a feedback signal back to a primary side circuit. The photocoupler control circuit (28) controls the photocoupler (IC1) so as to turn it off when the photocoupler control circuit is supplied with at least one of an overcurrent detected signal and an overvoltage detected signal. A voltage detection circuit (18) makes a latch circuit (16) operate when the voltage detection circuit detects a voltage induced in an auxiliary winding (NSLD) of a transformer with the photocoupler turned off, thereby making a switching operation of a switching type AC adapter circuit stop.

An electrically powered apparatus having a system body obtains power from an AC adapter connected to the system body. The system body and AC adapter are powered from a commercial power source. A battery connected to the system body is charged, then discharged to power the system body. An embedded controller suppresses power supplied from the AC adapter on a predetermined condition while both the AC adapter and the battery are connected to the system body. In a peak shifting time zone, switches are opened to enable the battery to power the system body. When the capacity of the battery is insufficient, a switch is closed to enable the AC adapter to power an inverter. When the capacity of the battery is still insufficient, another switch is closed to enable the AC adapter to power the CPU.

Systems, methods, and articles for a portable power case are disclosed. The portable power case is comprised of at least one battery and at least one PCB. The portable power case has at least two access ports and at least one USB port. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, and a tablet. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and generators. The portable power case provides for modularity that allows the user to disassemble and selectively remove the batteries installed within the portable power case housing.

An information handling system comprising a processor, a battery to provide power to the information handling system, an AC adapter input port coupled to the battery configured to receive an AC adapter, and a battery charger coupled to the battery and the AC adapter input port configured to identify a characteristic of the AC adapter and adjust a battery charge current based upon the characteristic. The battery charger comprises an adapter identification subsystem coupled to the AC adapter input port configured to identify the characteristic and provide an adjustment current, and an adjustable charger coupled to the adapter identification subsystem and the battery, configured to set the battery charging current based upon the adjustment current. The AC adapter identification subsystem comprises an adapter identification circuit coupled to the AC adapter input port configured to identify the characteristic, and a microcontroller configured to provide the adjustment current to the adjustable charger.

An apparatus, system, and method are disclosed for computer system power management. A control module 602 is activated on a computer 200 in response to an event and enters 818 a standby state if the computer 200 is not already 814 in the standby state. A policy module 604 detects 904 a power source of a predetermined type connected to the computer 200 and dictates 908 one or more processors 302 of higher power consumption for a more abundant type of power source such as an AC adapter 314, or one or more processors 304 of lower power consumption for a less abundant type of power source such as a battery 318. A configuration module 606, activated by the control module 602, switches 1004 the computer 200 to one or more processors 302 and 304 of a predetermined power consumption as dictated and exits 1016 the standby state.

A wireless adapter for use in a two-wire process control loop includes wireless communication circuitry and first and second terminals configured to couple in series with the two-wire process control loop. A regulator having a regulated input is coupled to the first terminal and an output. A shunt is coupled to the output of the regulator and is configured to provide power to the wireless communication circuitry. A feedback circuit is configured to control current flowing from the regulator to the shunt as a function of a loop current flowing through the two-wire process control loop.

A charging method, an alternating current adaptor, a charging management device and a terminal. The alternating current adaptor comprises: a micro-USB connector for connecting to an external terminal so as to charge the external terminal; a conversion module for converting a connected alternating current into a direct current and then outputting same to the micro-USB connector as an output; increasing a voltage to a designated value after having received a boosting instruction of a control module; a changeover switch which normally connects two differential signal lines of the micro-USB connector to a resistor by default and, when the micro-USB connector is connected to the external terminal, detects whether the two differential signal lines of the micro-USB connector are in a short-circuit state, and if so, then triggers the control module and disconnects the two differential signal lines of the micro-USB connector from the resistor; and the control module for sending the boosting instruction to the conversion module after being triggered. The technical solution may realize the rapid charging of a lithium battery of a portable mobile electronic product.

An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

A battery pack updating method updates firmware stored in internal control circuit memory via an update signal sent from a main device that supplies power. When battery pack memory is updated, an AC adapter is connected to the main device, and power is supplied to the main device from the AC adapter. The updating method transmits a charging and discharging blocking signal from the main device to the battery pack control circuit via a communication line. The charging and discharging blocking signal stops discharge from the battery pack rechargeable battery, and stops charging of the rechargeable battery. With rechargeable battery discharging and charging to and from the main device stopped by the charging and discharging blocking signal, the updating method transmits update data from the main device to the battery pack control circuit to update memory.

A single wire interface between an AC power adapter and end equipment, such as a notebook computer, conveys digital information from the adapter to the end equipment when the adapter is operative in a first operating mode and carries an analog signal employed in a closed loop to control the DC output voltage of the AC power adapter when the AC adapter is operative in a second operating mode. When the AC adapter is operative in the first operating mode, the AC adapter output voltage is clamped to a first predetermined voltage and when the AC adapter is operative in the second operating mode the output voltage is clamped to a second predetermined voltage, wherein the first predetermined voltage is less than the second predetermined voltage. Mechanisms for switching between the first and second operating modes are also provided.

A combination includes an AC-adapter and a pin configuration adapter. The AC-adapter includes a plug body having first pins of a first configuration and an AC-adapter housing having a conversion circuit for converting an electric power supplied via the plug body. The pin configuration adapter includes a plug part having second pins of a having configuration different from the first pin configuration, a receptacle part whereto the first pins can be inserted and a pin configuration adapter housing having an internal connection mechanism for electrically connecting the plug body and the plug part. The AC-adapter is provided with engagement grooves which engage with protrusions provided on said pin configuration adapter.

An electrical outlet strip is disclosed, the outlet strip comprised of a power source, such as a power cable, and a plurality of socket modules. At least one socket module includes at least one electrical socket electrically interconnected with the power source. Each socket module is mechanically and adjustably engaged with at least one other socket module, whereby the outlet strip is expandable and compressible such that both small power plugs and larger AC adapters may be plugged into the electrical socket of each socket module.

An under desk system is described for mounting electrical devices and their cords to home and office furniture, in particular beneath the desk to remove the clutter and mess often strewn about a computer laden desk. By way of example a rigid planar base member is adapted with engagement structures to retain a power strip, and further adapted with a plurality of band retention fingers configured for engaging elastic bands for being strapped between retention fingers on opposite sides of the power strip to retain AC adapters plugged into the power strip. Devices are also described for retaining modems, routers, wireless communication ports, and other small electrical devices to vertical surfaces, or more preferably beneath desk or other furnishings. These devices can be manufactured using molding processes or any other desired methods.

A schedule recording section (4) records a user's schedule. A SOC (state-of-charge) optimization planning section (5) plans the SOC of a rechargeable battery (21) based on the user's schedule. The planned control target SOC is optimized through a comparison between the continuous charging characteristic of the rechargeable battery (21) and the length of an operable period or the amount of electric power to be secured at the time of battery-powered operation. For example, a control target SOC is set at a full charge in the proximity of the period during which a battery-powered operation time is expected to be long. A control target SOC is set lower enough than a full charge in the period during which a connection to an external power supply (A) by the AC adapter (11) is expected to continue for a long time. A power-supply control section (3) controls the charge and discharge of the rechargeable battery (21) according to a plan for the optimization of the SOC.

A power supply circuit for a computer system includes an AC adapter designed to be connectable to the computer system and supplying power to the system, a main battery and a second battery that are designed to be connectable to the computer system and get charged with power from the AC adapter and then discharge it to supply power to the system, a charger that is a charging circuit for the main battery and / or the second battery while the main battery and / or the second battery is connected to the AC adapter with the computer system powered off, and a gate array circuit for turning off the power supply to an embedded controller.