Transient response operational amplifier circuit
AssigneeCrestron Electronics, Inc.
InventorRobert Buono
Life of this patent
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Abstract
A feedback control circuit is described herein, comprising: an operational amplifier (op-amp) integrated circuit, wherein a first output of the op-amp provides a feedback error control signal; at least two transistors provided in a feedback path between the first output of the op-amp and an inverting input to the op-amp; and a plurality of discrete electrical components in the feedback path, such that in the response to either an increase or decrease of an inverting input voltage at the inverting input that exceeds a predetermined level, will speed up substantially. The feedback control circuit provides the feedback error control signal.
Claims17
A feedback control circuit, comprising:
- an operational amplifier (op-amp) integrated circuit, wherein a first output of the op-amp provides a feedback error control signal;
- at least two transistors provided in a feedback path between the first output of the op-amp and an inverting input to the op-amp;
- and
- a plurality of discrete electrical components in the feedback path, such that
- in response to either an increase or decrease of an inverting input voltage at the inverting input that exceeds a predetermined level the feedback control circuit provides the feedback error control signal.
A power factor control circuit comprising:
- a modulator and power stage adapted to provide a main voltage;
- and
- a feedback control circuit, comprising:
- an operational amplifier (op-amp) integrated circuit, wherein a first output of the op-amp provides a feedback error control signal to control the main voltage;
- at least two transistors provided in a feedback path between the first output of the op-amp and an inverting input to the op-amp;
- and
- a plurality of discrete electrical components in the feedback path, such that
- in response to either an increase or decrease of an inverting input voltage at the inverting input that exceeds a predetermined amount of voltage, the feedback control circuit provides the feedback error control signal to control the main voltage.
Dependencies are inferred from the claim text.