Drive circuit with constant current output

Details Drive circuit with constant current output Drive circuit with constant current output

1975-10-28

1977-09-06

Smith, Jr., David

Electrical transmission or interconnection systems

Miscellaneous systems

For particular load device

315169TV, H02J 902

Patent

active

040470490

ABSTRACT:
A constant current drive circuit that can be driven directly from the output of a shift register which can find use, for example, as a constant current source for a light emitting diode (LED) to ensure uniform birghtness throughout a display surface that includes a plurality of LEDs.

REFERENCES:
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3754181 (1973-08-01), Kreitz
patent: 3770890 (1973-11-01), Winkler
patent: 3821596 (1974-06-01), Leuck
patent: 3843959 (1974-10-01), Owaki et al.
patent: 3886465 (1975-05-01), Mattfeld
"Monolithic ICS Drive Plasma Displays" Electronic Engineering, Jan. 1974, p. 16.

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