Time delay generator and method

Details Time delay generator and method Time delay generator and method

1999-01-13

2000-07-11

Le, Dinh T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327280, 327276, 327270, H03H 1126

Patent

active

060878762

ABSTRACT:
A time delay generator (20) includes a threshold generator (30), a ramp generator (32) and a comparator (34). The threshold generator provides a fixed threshold at one input of the comparator while the ramp generator provides at the other input a ramp signal whose slope is programmable. The ramp generator includes current switches (86 and 90) and a current converter (74). In response to input and range signals, the current switches provide a programmed input current and a programmed range current. The current converter generates a ramp current that is proportional to the range current and inversely proportional to the input current and couples that ramp current to an integrating ramp capacitor. The structure of the time delay generator facilitates noise filtering of the threshold signal and positioning of the threshold signal away from ramp nonlinearities.

REFERENCES:
patent: 4434403 (1984-02-01), Chang
patent: 4742331 (1988-05-01), Barrow et al.
patent: 4899152 (1990-02-01), Barrow et al.
patent: 5192922 (1993-03-01), Jordan
patent: 5198785 (1993-03-01), Jordan

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