Abstract: The present disclosure provides techniques for power factor correction on a constant current system and also provides power line communications on the same power factor correction circuit. In one example embodiment, through controlled charging and draining of an input capacitor, the power factor correction circuit generates an input voltage which is in phase with the input current. Communication data is also embedded in the input voltage and/or input current by further charging and draining of the input capacitor according to a controlled switching scheme which includes both input current phase data and corresponding communication signals.

Abstract: The present disclosure relates to a system and method for wirelessly configuring and diagnosing an airfield lighting system. In particular, the system can include a constant current regulator that comprises a wireless communication interface. The system can also include a plurality of light fixtures where one or more of the light fixtures includes a wireless communication interface. The constant current regulator and the light fixture can communicate via the wireless communication interfaces with a handheld wireless device. Alternatively, the constant current regulator and the light fixture can communicate via the wireless communication interfaces with wireless display devices. The wireless communication interfaces can communicate configuration and diagnostic information.

Abstract: The present disclosure provides techniques for power factor correction on a constant current system. In an example embodiment, the present disclosure provides a power factor correction circuit which receives a constant current power input. The power factor correction circuit provides an input voltage tuned to match the phase of the input current. The input voltage is tuned via charging and draining an input capacitor by a switching device. The switching device is driven on a duty cycle synchronously associated with the input current waveform.

Abstract: The present disclosure provides techniques for power factor correction on a constant current system without the use of a diode rectifier bridge. In an example embodiment, the present disclosure provides a power factor correction circuit which includes two switching MOSFETs biased in opposite directions which operate during opposite half cycles of the input current. The power factor correction circuit generates an input voltage to match the phase of the input current. The input voltage is generated via charging and draining of an input capacitor by the MOSFETs. The MOSFETs are driven on a duty cycle synchronously associated with the input current wave form.

Abstract: The present disclosure relates to a system and method for wirelessly configuring and diagnosing an airfield lighting system. In particular, the system can include a constant current regulator that comprises a wireless communication interface. The system can also include a plurality of light fixtures where one or more of the light fixtures includes a wireless communication interface. The constant current regulator and the light fixture can communicate via the wireless communication interfaces with a handheld wireless device. Alternatively, the constant current regulator and the light fixture can communicate via the wireless communication interfaces with wireless display devices. The wireless communication interfaces can communicate configuration and diagnostic information.

Abstract: The present disclosure provides techniques for a power factor correction system having an arbitrary input waveform. The present disclosure provides two example methods of digital power factor correction that allow for a high power factor on an arbitrary input waveform. The two example methods are applicable to both constant-current inputs and constant-voltage inputs. One example method samples the arbitrary input waveform to produce a reference table used to synchronize the input voltage with the input current in a constant current system, and to synchronize the input current to the input voltage in a constant voltage system. A second example method uses instantaneous input values as a reference in performing power factor correction.

Abstract: The present disclosure provides techniques for power factor correction on a constant current system. In an example embodiment, the present disclosure provides a power factor correction circuit which receives a constant current power input. The power factor correction circuit provides an input voltage tuned to match the phase of the input current. The input voltage is tuned via charging and draining an input capacitor by a switching device. The switching device is driven on a duty cycle synchronously associated with the input current waveform.

Abstract: The present disclosure provides techniques for power factor correction on a constant current system and also provides power line communications on the same power factor correction circuit. In one example embodiment, through controlled charging and draining of an input capacitor, the power factor correction circuit generates an input voltage which is in phase with the input current. Communication data is also embedded in the input voltage and/or input current by further charging and draining of the input capacitor according to a controlled switching scheme which includes both input current phase data and corresponding communication signals.

Abstract: The present disclosure provides techniques for power factor correction on a constant current system without the use of a diode rectifier bridge. In an example embodiment, the present disclosure provides a power factor correction circuit which includes two switching MOSFETs biased in opposite directions which operate during opposite half cycles of the input current. The power factor correction circuit generates an input voltage to match the phase of the input current. The input voltage is generated via charging and draining of an input capacitor by the MOSFETs. The MOSFETs are driven on a duty cycle synchronously associated with the input current wave form.

Abstract: The present disclosure provides techniques for a power factor correction system having an arbitrary input waveform. The present disclosure provides two example methods of digital power factor correction that allow for a high power factor on an arbitrary input waveform. The two example methods are applicable to both constant-current inputs and constant-voltage inputs. One example method samples the arbitrary input waveform to produce a reference table used to synchronize the input voltage with the input current in a constant current system, and to synchronize the input current to the input voltage in a constant voltage system. A second example method uses instantaneous input values as a reference in performing power factor correction.