H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/103
H03F 1/34 (2006.01) G01R 13/22 (2006.01) H03F 1/48 (2006.01) H03F 3/34 (2006.01)
Patent
CA 1136228
OPERATIONAL AMPLIFIER WITH SLEW RECOVERY ENHANCEMENT Abstract of the Invention Improved slew recovery in a composite driving amplifier for driving a substantially reactive load including a feedback loop to the operational amplifier from the load for regulating the output of the amplifier, the composite amplifier has a predetermined resistance R1 in the feedback loop and includes a second feedback loop having a predetermined resistance R2. The second feedback loop extends from the output of the operational amplifier to the negative input and is substantially parallel with the first-mentioned feedback loop. To maximize the recovery of the amplifier from a slew condition, the relationship of R1-R2 should be as follows: Image wherein: Vo is the output voltage in the amplifier. SLOPE, is the slope of the load voltage curve during the overload condition, and DELAY represents the period of time it takes the overload operational amplifier to respond to a feedback signal at a given overload condition.
323965
Macrae & Co.
Warner-Lambert Company
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