Diode driver circuit utilizing discrete-value DC current source

Details Diode driver circuit utilizing discrete-value DC current source Diode driver circuit utilizing discrete-value DC current source

1990-03-23

1992-05-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307311, 307315, 372 38, H03K 301, H03K 342, H03K 326, H01S 300

Patent

active

051110652

ABSTRACT:
A diode driver circuit has an adjustable, fixed-value current source and a variable offset current source for drawing a bias current through a laser diode. A Darlington pair buffer circuit isolates the diode from the rest of the driver circuit. The output current of the offset current source is controlled by a number of digital-to-analog converters each controlling a different contribution to the total offset current. A diode protector circuit protects the diode when the system is in an inactive state.

REFERENCES:
patent: 4145649 (1979-03-01), Pickton
patent: 4292606 (1981-09-01), Trimmel
patent: 4489415 (1984-12-01), Jones, Jr.
patent: 4736380 (1988-04-01), Agoston
patent: 4799224 (1989-01-01), Bottachi et al.
patent: 4803384 (1989-02-01), Yamane et al.
patent: 4912714 (1990-03-01), Hatanaka et al.

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