Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Slope control of leading or trailing edge of rectangular or...
Patent
1995-04-28
2000-01-11
Zweizig, Jeffrey
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Slope control of leading or trailing edge of rectangular or...
327379, H03K 512
Patent
active
060140496
ABSTRACT:
A modulator has an FET output driver for applying repetitive pulses to an inductive load. A predriver comprises a resistor and capacitor in parallel across the FET source and gate for shaping the control voltage. A constant current source, turned on and off by an input signal, couples the shaping circuit to ground. The resistor and capacitor values determine the rate of control voltage change which is the same for turn-on and turn-off, to control the driver current slew rate for minimizing RFI emissions.
REFERENCES:
patent: 4216392 (1980-08-01), Valkestijn
patent: 5406136 (1995-04-01), Kondoh et al.
Sedra & Smith, Microelectronic Circuits, Saunders College Publishing 1991 Philadelphia, pp. 434-436.
Gray & Meyer, Analysis & Design of Analog Integrated Circuits, John Wiley & Sons, Inc. 1993 New York, pp. 215-217 Sedra & Smith, Microelectronic Circuits, Saunders College Publishing 1991 Philadelphia, pp. 241-243.
Bach James Carter
Baker John J.
Kilgour Gerlad A.
Stock Robert Joseph
Szep Richard J.
Delco Electronics Corp.
Funke Jimmy L.
Zweizig Jeffrey
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