Light emitting diode transmitter circuit with temperature compen

Details Light emitting diode transmitter circuit with temperature compen Light emitting diode transmitter circuit with temperature compen

1990-04-13

1991-04-30

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

455613, H05B 3904

Patent

active

050121626

ABSTRACT:
A light emitting diode circuit with an emitter coupled logic (ECL) interface is provided with temperature compensation by a series circuit consisting of a pair of resistors which are separated by at least one diode. A first switching field-effect-transistor which receives the output of the interface has its drain-to-source path coupled to the junction of one of the resistors and the diodes, while an output drive field-effect-transistor has its gate coupled to the junction of the other resistor and the diodes and its drain-to-source path coupled in series with a light emitting diode (LED).

REFERENCES:
patent: 4243952 (1981-01-01), Patterson
patent: 4580293 (1986-04-01), Reichle
patent: 4580294 (1986-04-01), Nordholt
patent: 4943737 (1990-07-01), Guo
Miller, S. E. and Kaminow, I. P., Optical Fiber Telecommunications, Academic Press, 1988, pp. 727-730.

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