Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Patent
1996-07-30
1998-10-27
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
327112, 327428, 327439, H03K 300
Patent
active
058282440
ABSTRACT:
A driver circuit delays the turning on of a MOS transistor by utilizing the time-wise pattern of the circuit input signal rather than generating a delay within the circuit itself. A threshold type of circuit element is arranged so that no current flows toward or from, depending on the type of the MOS transistor, the control terminal before the voltage at the circuit input exceeds a predetermined value. This is achieved, for example, by coupling a Zener diode serially to the control terminal. Where the input signal is of a kind which increases with a degree of uniformity, the time required to exceed that threshold will correspond to the desired delay. Thus, the driver circuit can match the dynamic range of the input signal automatically.
REFERENCES:
patent: 3742252 (1973-06-01), Brzostek
patent: 4481434 (1984-11-01), Janutka
patent: 4631652 (1986-12-01), Wendt
patent: 4777387 (1988-10-01), Collins
patent: 5126651 (1992-06-01), Gauen
patent: 5352932 (1994-10-01), Tihanyi
patent: 5371418 (1994-12-01), Leipold et al.
Graziano Vito
Palara Sergio
Callahan Timothy P.
Consorzio per la Ricerca sulla Microelettronica nel Mezzogiorno
SGS-Thompson Microelectronics S.r.l.
Wells Kenneth B.
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