Patent
Inductively powered lamp unit
TLDR
An inductively powered lamp unit 806 is fixed onto a substrate and over a position where a primary inductive loop 803 is spread apart (as at 807). At such sites, a horizontal component of alternating magnetic flux is available as discussed by the authors.Abstract:
An inductively powered lamp unit 806 is fixed onto a substrate and over a position where a primary inductive loop 803 is spread apart (as at 807). At such sites, a horizontal (or at least parallel to the surface of the substrate) component of alternating magnetic flux is available. The conductors of the loop 802-803 can be inserted in a slit 804 cut into the substrate. The spreading apart of the conductors may be ensured with a spreader 808. A power supply 801 may be a resonant supply operating at 40 kHz. The lamp unit 806 does use a resonant pickup coil which can be shorted so as to minimize coupling, and provide supply regulation. The lamp unit can be controlled by signals transmitted over the primary loop. Applications include roadway markers and fire escape egress indicators, and underwater lighting.read more
Citations
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Patent
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References
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Patent
Inductive power distribution system
TL;DR: In this paper, a contactless inductive power distribution system operating at 10 KHz has a self tuning resonant power supply connected to a resonant primary conductive path (10110, 10111) comprising a pair of parallel litz wire conductors, each encapsulated within an insulated sheath and supported on a structural monorail beam.
Patent
Inductive power pick-up coils
TL;DR: In this paper, a loosely coupled inductive power transfer system suitable for transferring power to a mobile conveyer platform or a vehicle has pick-up coils wound on flux concentrator(s).
Patent
Resonant power supplies
TL;DR: A phase-splitting transformer provides, via a decoupling inductor, one connection for a power supply; the return is through the active switches, which are either off or are from time to time driven alternately by the controller as discussed by the authors.
Patent
Control circuit for providing regulated current to lamp load
TL;DR: In this paper, a control circuit for gaseous discharge lamps including a variable frequency inverter for driving a high reactance transformer having a first capacitor in the transformer secondary tuned to a harmonic of the supply voltage to provide ignition voltage for the lamps, and a second capacitor in near series resonance with the fundamental frequency of the input voltage for stable operation after ignition.
Patent
Electrodeless discharge lamp and power coupler therefor
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