Rotary coupler effecting power and information exchange

Details Rotary coupler effecting power and information exchange Rotary coupler effecting power and information exchange

1992-10-29

1993-12-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

359143, G02B 2700

Patent

active

052723500

ABSTRACT:
A rotary coupler comprises a rotary transformer which transfers power across an air gap and an infrared coupler that carries data across the air gap in duplex. The rotary transformer and the data coupler are built within an enclosure to withstand downhole conditions. Control circuitry comprising a pulse width modulator regulates the amount of power transferred across the air gap by the rotary transformer. The data coupler comprises two transmitter/receiver array pairs to transfer data across the air gap in duplex.

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patent: 4837556 (1989-06-01), Matsushita et al.
patent: 4962495 (1990-10-01), Gibbons et al.
patent: 4988973 (1991-01-01), Inui et al.
patent: 5019814 (1991-05-01), Biggs et al.

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