Assume the input signal to a rectifier circuit has a peak value of V M = 12 V and is at a frequency of 60 Hz. Assume the output load resistance is R = 2 k Ω and the ripple voltage is to be limited to V r = 0.4 V . Determine the capacitance required to yield this specification for a (a) full−wave rectifier and (b) half−wave rectifier. (Ans. (a) C = 125 μ F , (b) C = 250 μ F ).
Assume the input signal to a rectifier circuit has a peak value of V M = 12 V and is at a frequency of 60 Hz. Assume the output load resistance is R = 2 k Ω and the ripple voltage is to be limited to V r = 0.4 V . Determine the capacitance required to yield this specification for a (a) full−wave rectifier and (b) half−wave rectifier. (Ans. (a) C = 125 μ F , (b) C = 250 μ F ).
Solution Summary: The author explains that the capacitance value for a full-wave rectifier is C=125mu F.
Assume the input signal to a rectifier circuit has a peak value of
V
M
=
12
V
and is at a frequency of 60 Hz. Assume the output load resistance is
R
=
2
k
Ω
and the ripple voltage is to be limited to
V
r
=
0.4
V
. Determine the capacitance required to yield this specification for a (a) full−wave rectifier and (b) half−wave rectifier. (Ans. (a)
C
=
125
μ
F
, (b)
C
=
250
μ
F
).
A schematic design of a full-wave bridge type power supply is given below. Provide the appropriate values for the inductors, diodes, capacitor and resistors, such that the output DC voltage is 6.2 V and the max. output power for the load resistance is 20 mW (percentage error for output voltage and output power is 2%). AC voltage source: Amplitude=311.13, Freq=60, DC offset= 0. For the rectifier part, choose diodes with an appropriate PIV rating. Show all the formulas and computations involved in acquiring the values for the inductors, diodes, capacitor and resistors.
In choosing your Zener diode, consider the output voltage and the output current. Note that the output current should be the minimum Zener current.
For the value of the series resistor RS, choose a lower value for less ripple but always consider the required output voltage.
The ripple voltage peak-to-peak value should be less than or equal to 1% of the required output voltage. Use the formula below for choosing the value…
Consider the full-wave rectifier circuit shown below, where• vS(t) is a sinusoidal signal with a peak value (Vs = 5 V).• Diodes are modelled using constant voltage model with VDO = 0.7 V• The ac line voltage has an rms value of 120 V and a frequency (f) = 60 Hza) Calculate the transformer turns ratio.
b) Plot in the same graph signal vS(t) and the output signal vO(t) versus time (t) (show all details including amplitudes, time instances, etc.)
c) Calculate the rms value of the output signal vO(t). (hint: sin2(x) = 0.5(1- cos(2x)))
d) If a capacitor C=3.58 F is connected across R = 10 k, repeat (b) in a new graph
A full-wave bridge rectifier produces an output voltage with a ripple factor of 5%. The circuit is
connected to a 0.75 W load which draws a load current of 15 mA. Assuming ideal diodes,
determine;
(a) Load voltage
(d) RMS ripple voltage, ??(???)
(e) Value of filter capacitor, ?
(f) Expected dc output voltage, ???
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