Thermo-electric temperature control arrangement for laser appara

Electrical transmission or interconnection systems – Switching systems – Condition responsive

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372 34, 323271, H01H 3710, H01S 304

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active

051189640

ABSTRACT:
A thermo-electric laser temperature control apparatus is driven by a switching mode control circuit. Driving current polarity determines if the thermo-electric apparatus is operating in a heat absorbent or heat generating mode. A sequencing control circuit is used in association with the control circuit to define operative ranges of the thermo-electric temperature control apparatus consistent with maintaining proper temperature for a linear operative range for the laser. Feedback circuitry permits precision control of the converter output to limit the operative temperature range of the laser to a small precisely defined temperature window.

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patent: 4884279 (1989-11-01), Odagiri
patent: 5019769 (1991-05-01), Levinson

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