Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1995-04-28
1996-08-06
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327103, 327540, 327541, 327543, 323315, G05F 110
Patent
active
055437451
ABSTRACT:
Current I.sub.P through a transistor 2 linearly decreases according to control voltage V.sub.I in the range from 0 to V.sub.DD -V.sub.TP. Current I.sub.N through a transistor 3 linearly increases according to control voltage V.sub.I in the range from V.sub.TN to V.sub.DD. In a subtraction/inversion circuit 5, constant current I.sub.CONST is introduced, I.sub.P is subtracted therefrom, and .DELTA.I having an inclination in the same direction as I.sub.N is produced. Bias current I.sub.B serially changing in the range of V.sub.I from 0 to V.sub.DD passes through a transistor 7. Accordingly, even if control voltage V.sub.I is smaller than the threshold voltage V.sub.TN of an input transistor, current I.sub.B or voltages V.sub.PP and V.sub.BN which linearly change according to control voltage V.sub.I are output.
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patent: 4922141 (1990-05-01), Lofgren et al.
patent: 5012133 (1991-04-01), Hughes
patent: 5302920 (1994-04-01), Bitting
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Cunningham Terry
Mitsubishi Denki & Kabushiki Kaisha
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