Abstract: A common mode noise cancellation circuit eliminates common mode noise generated by one or more high-frequency switching devices. A common mode noise waveform generated by the one or ore switching devices is capacitively coupled from the primary winding to the first secondary winding of a transformer. A set of cancellation secondary windings generates a common mode cancellation waveform, and cancels the common mode noise waveform because the common mode cancellation waveform is approximately equal in amplitude and opposite in phase to the common mode noise waveform. A triac control circuit receives an AC input and determines whether the AC input is within a range where multiplying of the DC voltage is implemented. If the triac control circuit determines the AC input is within the range, the triac control circuit transmits a triac firing signal to the triac circuit. The triac circuit charges a capacitor bank to multiply the DC voltage.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: The invention relates to a system and method for collecting and analyzing data of a wireless communication network including “micro” or “pico” wireless networks. The system collects wireless network performance data utilizing a monitoring device, correlates this information with the monitoring device's location and transmits this time-correlated information to a display device. The system tracks the monitoring device in real-time and provides precise location information of the monitoring device. The system has a built-in self-correction mechanism in a navigational module to verify a test operator's location. In addition, the system also includes an analysis device for post-test processing of the collected cellular radiotelephone network's performance information. The system is portable with long-lasting battery power.

Abstract: A voltage regulator receives an external input voltage, either a rectified alternating current (AC) voltage or a direct current (DC) voltage and converts it to an input voltage. The voltage regulator outputs a correction signal from the output correcting device to direct a voltage boosting device to a regulated output-to-input voltage ratio. The voltage boosting device receives the input voltage and receives the direction of the correction signal and outputs a regulated DC output voltage that maintains a regulated output-to-input voltage ratio. In a second aspect of the invention, the voltage regulator receives a voltage control input at an output correcting device. The voltage regulator outputs a correction signal from the output correcting device to direct a voltage boosting device to an established ratio of an actual-to-control voltage ratio.

Abstract: A system has an adapter/charger to receive power from a power source and output a first DC power signal. A universal battery receives the first DC power signal directly from the adapter/charger and to supplies a second DC power signal, and the universal battery includes at least one battery cell chargeable by the first DC power signal. A power tip receives the second DC power signal and outputs a third DC power signal useable by an electronic device. The power tip includes control circuitry to output a programming signal to program a magnitude of the first DC power signal.

Abstract: A power supply system includes an adapter to receive power from a power source, and output a regulated output voltage (Vout). A tip receives Vout from the adapter, and output Vout to an electronic device. The tip includes active circuitry to adjust a programming voltage (Vprog). Vprog is fed back to the adapter to control a magnitude of Vout.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A cradle casing has a DC/DC adapter to receive DC power from a DC power source and generate a first DC power signal. A sleeve accepts an AC/DC adapter, and guides movement of the AC/DC adapter when the AC/DC adapter is inserted into the cradle casing. The AC/DC adapter is capable of receiving AC power from an AC power source and generating a second DC power signal. A circuit receives at least one of the first DC power signal and the second DC power signal and outputs a third DC power signal.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: A secondary adapter for receiving a DC power signal and providing an ouput power signal as an input to an AC power adapter is disclosed. The AC power adapter may then provide a DC power signal to meet the input power requirements of an electronic appliance. While the AC power adapter is adapted to receive power from an AC power source, the secondary adapter converts a DC power source to provide an input power signal which is sufficient to power the AC power adapter. The secondary adapter enables the AC power adapter to provide power to the electronic appliance from either an AC power source or a DC power source.

Abstract: A progammable power supply for providing a regulated DC output power is disclosed. The power supply provides the output power to any one of a plurality of electronic devices adapted for receiving the output power at an operational voltage or an operational current. The power supply receives a programming signal to maintain the output power at the operational voltage or operational current associated with a particular selected electronic device. Accordingly, by varying the programming signal, the power supply can be programmed to provide output power to any one of several electronic devices having differing input power requirements.

Abstract: The subject matter disclosed herein relates to mechanisms for programming power supply circuitry for providing an appropriate current or voltage to powering portable devices or recharge batteries. More particularly, a power supply is coupled to a portable device of battery through a connector which is associated with the portable device or battery. The connecter includes resistive circuitry which is detectable at the power supply for programming the power supply to provide the appropriate voltage or current associated with the portable device or battery.

Abstract: An apparatus for moving a member between a retracted position and an extended position includes a housing, a movement mechanism, a linear lead screw, a first carriage, and a second carriage. The housing has a curved path between the retracted position and the extended position. The lead screw has a longitudinal axis and threads. The movement mechanism is coupled to the lead screw to rotate the lead screw about the longitudinal axis. The first carriage has a connecting structure and a bore with threads that mate with the threads of the lead screw to move the carriage linearly along the longitudinal axis of the lead screw when the lead screw rotates. The second carriage is coupled to the member and has a connecting structure.

Abstract: A preferred embodiment of the present invention provides an emergency call box that has a cellular transceiver, a controller for controlling the cellular transceiver, and a memory for storing preprogrammed telephone numbers. Additionally, a display and push button selection switches are provided to allow bidirectional communication between the controller and a call box user. The controller presents the user with preprogrammed questions through the display, determines which one of the preprogrammed telephone numbers should be called based on the response received through the selection switches, and places a call to the determined telephone number using the cellular transceiver. In one embodiment, the controller determines whether there is an emergency or non-emergency situation based on the user's response, calls one of the preprogrammed telephone numbers if there is an emergency situation, and calls another of the preprogrammed telephone numbers if there is a non-emergency situation.

Abstract: A system and method for charging rechargeable batteries is disclosed. A charging circuit monitors aspects of a rechargeable battery during charging and applies power to the terminals of the battery received from a power supply. The charging circuitry signals to a power supply to control the current or voltage applied to the charging circuitry based upon the monitored aspects of the battery and the type of charge storing compound within the cells of the battery. The charging circuitry and battery may be part of a rechargeable battery cartridge disposed within a compartment of a portable electronic device having a dynamic operational load. By controlling the power supply, the charging circuitry can simultaneously apply power to the operational load to operate the device while charging the battery.

Abstract: A new, small form factor power supply is disclosed that provides a regulated DC power supply in a package that radiates relatively little heat and that occupies 2.85.times.5.0.times.0.436 inches. The secondary coil of the transformer is positioned at the summing node of the flux of the primary coils and the phase of the drive signals provided to the secondary coils is regulated to control the current and voltage provided by the secondary circuit. Preferably, all circuit components are surface mount devices and the transformer cores are E block planar cores mounted on the printed circuit board.

Abstract: A new, small form factor power supply is disclosed that provides a regulated DC power supply in a package that radiates relatively little heat and that occupies 2.85.times.5.0.times.0.436 inches. The secondary coil of the transformer is positioned at the summing node of the flux of the primary coils and the phase of the drive signals provided to the secondary coils is regulated to control the current and voltage provided by the secondary circuit. Preferably, all circuit components are surface mount devices and the transformer cores are E block planar cores mounted on the printed circuit board.