Appeal No. 1997-0440
Application No. 08/582,237
The invention is directed to a circuit which limits the
output of an amplifier to a value that is determined as a
preselected percentage of a reference value. The invention
achieves this by providing a current sourcing comparator that
provides a current at its output which is independent of the
voltage at its output. The magnitude of the current at the
output of the current sourcing comparator is a function of the
voltages at its inverting and noninverting inputs and is
unaffected by the changing voltage at its output. The
invention is further illustrated by the following claim below.
1. A circuit for providing a limited amplifier output,
comprising:
a first source of a first signal;
a first amplifier having a first input and a first
output, said first input being connected in electrical
communication with said first source;
a second amplifier having a second input and a third
input, said second amplifier having a second output, said
second output being connected to said first input, said third
input being connected to said first output, said second
amplifier being a current sourcing comparator and said second
output being connected to provide a current to said first
input to prevent an increase in the magnitude of said first
output;
a second source of a reference signal; and
first means for providing a second signal which is a
first preselected percentage of said reference signal, said
second signal being connected to said second input.
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007