Exam 20: Nonlinear Op-Amp Circuit Applications Key

False triggering of a Schmitt trigger caused by noise is prevented by

In order for a transistor output stage that is used with an IC comparator to work properly,an open collector must be connected to

A comparator circuit that detects when the input voltage is between two limits is called

A circuit that adds a dc component to the input signal and has an output which is the same size and shape as the input,except for the dc shift is the

Which of the following is not a nonlinear circuit?

A comparator whose positive output indicates that the input voltage exceeds a specific limit is referred to as

What can be done to alleviate speed limitations such as the slew-rate when using an op amp as a comparator?

A comparator has two input voltages and one output voltage which is either a low or a high voltage.

Linear circuits include comparators,waveshapers,and active diode circuits.

Some of the more sophisticated Class D amps use a MOSFET H-bridge circuit for the switching devices an can attain efficiencies upwards from

What will reduce the effect of a diode's knee voltage and enable the diode circuit to rectify,clip,and clamp signals with amplitudes less than the knee voltage?

What type waveform does a Schmitt trigger produce?

Any kind of unwanted signal that is not derived from or harmonically related to the input signal is referred to as ________.

If the output swing of a zero-crossing detector is too large for an application,back-to-back zener diodes can be used and the output will be bounded.

The trip point of a comparator is located in the center of the linear region.

In order for an integrator to work properly,the closed-loop time constant should be how many times greater than the width of the input pulse?

Some optimized comparators have diode clamps built into input stages in order to protect sensitive circuits.

Oscillators are built with negative feedback.

Hysteresis is desirable in a Schmitt trigger because it prevents noise from causing false triggering.

Oscillators are built with and operate because of