MODULE 3: Diode Applications (Rectifiers) Flashcards
It is an electrical device that converts alternating current
(AC), which periodically reverses direction, to direct
current (DC), which flows in only one direction.
RECTIFIER
The
process is known as ______, since it “straightens”
the direction of current.
rectification
either the positive or negative half of
the AC wave is passed, while the other half is blocked.
Half-Wave Rectification
converts the whole of the input waveform
to one of constant polarity (positive or negative) at its output.
Full-Wave Rectification
converts both polarities of the input
waveform to DC (direct current), and is more efficient.
Full-Wave Rectification
The ______ of an alternating current is the maximum or
minimum voltage of a sinusoidal wave.
peak voltage
This is the value from positive peak to the negative peak
Peak-to-Peak Value
It is the value of a sinusoidal wave at any instant of time
Instantaneous Value
It is the arithmetic average of all the values in a sine
wave for one alternation or a half-cycle.
Average Value (VDC or VAVE)
The ___ value of a set of values (or a continuous time
waveform) is the square root of the arithmetic
mean (average) of the squares of the original values
Root-Mean-Square
or the square of the function that defines the
continuous waveform
Root-Mean-Square
another term for RMS
Effective Value
Value of an alternating voltage that is just as effective
as a steady dc voltage with the same value.
Effective Value
formula for Vdc/Vave (half wave)
Vdc = Vm/pi = 0.318Vm
formula for Vrms (half wave)
Vrms = Vm/2
