Gary A Stefura

US Patent:

51948028, Mar 16, 1993

Filed:

Oct 25, 1991

Appl. No.:

7/782139

Inventors:

Kevin E. Hill - Vestal NY
Gary A. Stefura - Endicott NY

Assignee:

General Electric Company - Johnson City NY

International Classification:

G05F 1575

US Classification:

323280

Abstract:

A current regulator providing a highly accurate bidirectional output current, proportional to a control voltage (V. sub. i) and suited to monolithic integration is disclosed. The regulator uses a clocked integrator which integrates an error charge, arrived at by taking a precisely ratioed sample charge proportional to a voltage drop (V. sub. F), free of its common mode voltage, which is in turn proportional to the load current, and one proportional to the control voltage (V. sub. i), and combining them subtractively to form the error charge. The arrangement uses two small charge ratioing capacitors charged respectively to V. sub. F and V. sub. i, and a slightly larger integrating capacitor. The clocking is at a 10 KHZ rate. High impedance circuitry is utilized so that highly accurate, integrated capacitors of modest size and high relative accuracy may be used.

US Patent:

52202186, Jun 15, 1993

Filed:

Sep 23, 1991

Appl. No.:

7/763569

Inventors:

Kevin E. Hill - Vestal NY
Gary A. Stefura - Endicott NY

Assignee:

General Electric Company - Johnson City NY

International Classification:

H01L 2500

US Classification:

3074821

Abstract:

A novel double diffused complementary MOS (DCMOS) logic family is disclosed which allows greater tolerance to total dose gamma radiation. The logic family may be fabricated in conventional power BiCMOS IC technology in which complementary power DMOS output devices and Bi-polar transistors are integrated with high performance complementary MOS devices to perform both digital and analog functions. The incorporation is achieved without the additional masks or process modifications normally required for improving radiation tolerance.