Exam 20: Nonlinear Op-Amp Circuit Applications Key

When the output swing of a zero-crossing detector is too large for some applications,back-to-back zener diodes are used to

What device is typically used to protect the comparator against excessively large input voltages?

What is the circuit whose output voltage ideally switches from low to high or vice versa whenever the input voltage crosses zero?

When harmonically related signals are applied to the horizontal and vertical inputs of an oscilloscope,what is displayed?

In order to prevent an op amp differentiator from oscillating

An oscillator circuit can generate or create an output signal with

Detecting the leading and trailing edges of a rectangular pulse or producing a rectangular output from a ramp input are applications of what circuit?

A Schmitt trigger always produces a rectangular output.

With an active peak detector circuit,the capacitor can be rapidly discharged in preparation for another input signal by using a

A comparator using positive feedback is usually called a

Which class of amplifier uses output transistors operating as switches?

The input voltage of a comparator that causes the output voltage to switch states from low to high or vice versa is called the

Which of the following is not an advantage of monolithic op amps?

Comparators usually interface at their outputs with digital circuits such as ________.

If an RC differentiator is to produce narrow spikes,the time constant should be

What is the output waveform when a relaxation oscillator is cascaded with an integrator?

Thermal noise is caused by speaker wires located in an environment with a high ambient temperature.

A Lissajous pattern appears on an oscilloscope when harmonically related signals are applied to the horizontal and vertical inputs.

What is the circuit that performs a calculus operation and produces an output voltage proportional to the instantaneous rate of change of the input voltage?

What is a circuit that has two input voltages and one output voltage which is either a low or a high voltage?