Wave

Front 1

One alternation is called a?

Back 1

PULSE

Front 2

time for one complete cycle is called the?

Back 2

PULSE REPETITION TIME (prt)

Front 3

The number of times in 1 second that the cycle repeats itself is called the?

Back 3

PULSE-REPETITION FREQUENCY (prf) or PULSE-REPETITION RATE (prr).

Front 4

If each alternation in
is 200 microseconds (μs)
prt will be?
prf will be?

Back 4

400 microseconds
2,500 hertz (PRF=1/PRT)

Front 5

length of the pulse measured in time (T0 to T1) is referred to as the?

Back 5

PULSE WIDTH (pw).

Front 6

The interval of time needed for the voltage to go from 0 to 100 percent (or from 100 to 0 percent) of its maximum value is called the

Back 6

TRANSIENT INTERVAL

Front 7

is more accurately defined as the time required for the voltage to build up from 10 percent to 90 percent of the maximum amplitude point.

Back 7

Rise time

Front 8

is the time required for the voltage to drop from 90
percent to 10 percent of the maximum amplitude point.

Back 8

Fall time

Front 9

The type of circuit most often used to generate square or rectangular waves is the?

Back 9

multivibrator

Front 10

A multivibrator is

Back 10

basically two amplifier circuits arranged with regenerative feedback

Front 11

One of the amplifiers is what while the other is what.

Back 11

conducting
cutt off

Front 12

What type of multivibrator does not have a stable state?

Back 12

ASTABLE

Front 13

What type of multvibrator has one stable state?

Back 13

MONOSTABLE

Front 14

What type of multivibrator has two stable states?

Back 14

BISTABLE

Front 15

With no external signal applied, the transistors alternately switch from cutoff to saturation at a frequency determined by the RC time constants of the coupling
circuits.

Back 15

ASTABLE

Front 16

A
signal must be applied to change this condition. After a period of time, determined by the internal RC
components, the circuit will return to its original condition where it remains until the next signal arrives.

Back 16

MONOSTABLE

Front 17

It remains in one of the stable states until a trigger is applied. It then FLIPS to the other stable condition and remains there until another trigger is applied. The multivibrator then changes back (FLOPS) to its first stable state.

Back 17

BISTABLE

Front 18

An astable multivibrator is also known as a?

Back 18

FREE-RUNNING MULTIVIBRATOR

Front 19

The astable multivibrator has
how many outputs? inputs?

Back 19

two
none

Front 20

astable multivibrators must have a high degree of?

Back 20

frequency stability

Front 21

The prt of the input triggers must be (shorter/longer) than the natural free-running prt of the astable multivibrator, or the trigger prf must be slightly (higher/lower) than the free-running prf of the circuit. This is to
make certain the triggers control the prt of the output.

Back 21

shorter
higher

Front 22

monostable multivibrator sometimes called a?

Back 22

ONE-SHOT MULTIVIBRATOR

Front 23

The monostable multivibrator actually takes this series of input triggers and converts them to?

Back 23

uniform square pulses

Front 24

In an astable multivibrator, which components determine the pulse repetition frequency?

Back 24

RC coupling networks.

Front 25

The bistable multivibrator that most technicians know is commonly known by other names?

Back 25

ECCLES-JORDAN circuit
FLIP-FLOP circuit

Front 26

are used in switching-circuit applications (computer logic operations) as counters, shift
registers, clock pulse generators, and in memory circuits.

Back 26

Flip-flops

Front 27

In a bistable multivibrator, how many trigger pulses are needed to produce one complete cycle in the output?

Back 27

Two

Front 28

If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?

Back 28

SET state

Front 29

is a special type of wave generator used to produce a narrow pulse, or trigger.

Back 29

BLOCKING OSCILLATOR

Front 30

In a blocking oscillator the pulse width (pw), pulse repetition time (prt), and pulse repetition rate
(prr) are all controlled by?

Back 30

the size of certain capacitors and resistors and by the operating characteristics of the transformer.

Front 31

gives the most rapid transient response without overshoot.

Back 31

CRITICAL DAMPING

Front 32

gives rapid transient response with overshoot caused by high or infinite resistance

Back 32

UNDERDAMPING

Front 33

What component in a blocking oscillator controls pulse width?

Back 33

Transformer

Front 34

For an RC circuit to produce a linear output across the capacitor, the voltage across the capacitor may not exceed what percent of the applied voltage?

Back 34

Ten percent

Front 35

Increasing gate length in a sawtooth generator does what to linearity?

Back 35

Decreases linearity.

Front 36

In a sawtooth generator, why is the transistor turned on for a longer time than the discharge time of the RC network?

Back 36

To allow the capacitor time to discharge

Front 37

What is added to a sawtooth generator to produce a trapezoidal wave?

Back 37

A resistor.

Front 38

has a linear change in voltage and a fast
recovery time. The linear change in voltage is generated by taking the output from a capacitor. The
sawtooth voltage waveform is used to provide electrostatic deflection in oscilloscopes.

Back 38

SAWTOOTH GENERATOR voltage waveform

Front 39

is used to provide, a linear increase in current through a coil. A trapezoidal wave begins with a step or jump voltage, then a sawtooth wave. A trapezoidal wave of voltage is used in electromagnetic deflection display devices.

Back 39

TRAPEZOIDAL GENERATOR voltage waveform