Half Moving Ridge Rectifier
Generally, the term rectifier is used inwards many places exactly equally inwards electrical the rectifiers are used to convert the input a.c indicate into pulsating d.c signal. The rectifier is classified into 3 terra firma on the type of rectification as well as past times the type of transformer. They are
i)Half moving ridge Rectifier
ii)full moving ridge rectifier (center tapped)
iii)bridge rectifier
lets perish into the types inwards detail:
HALF WAVE RECTIFIER:
Half moving ridge rectifier is a device which rectifies the one-half moving ridge of the ac indicate to the dc. The one-half moving ridge rectifier consist of a a.c supply, a transformer, a pn junction diode (which acts equally a switch), a capacitor(for regulating output),a load.
WORKING:
The a.c indicate input (normally 220-240v) is straightly fed into a pace downwards transformer. Since the working status of the diode is express upto few volts, nosotros receive got to pace downwards the high voltage input. then the voltage is fed into the pn diode. at that topographic point are 2 types of modes on the pn junction diode
CASE 1:
when the positive one-half of the a.c input is flows through the diode, the positive finally flows through the p side of the diode thus it is inwards forrad bias thus the diode conducts as well as a pulsating one-half wheel output is obtained.
CASE 2:
when the negative one-half of the a.c input is flows through the diode, the negative finally flows though the n side of the diode thus it is inwards opposite bias condition, thus the diode acts equally a off switch as well as thus no output is obtained.
Then the electrical current flows through the capacitor connected inwards series. The capacitor by as well as large turns the pulsating output into a constant dc output inwards other words it acts equally a filter. thus the output is obtained equally dc.
OUTPUT AND INPUT WAVEFORM OF HALF WAVE RECTIFIER:
note:the showtime waveform is the output as well as the instant is the a.c input
MATLAB STIMULATION MODEL
TO detect Vdc:
Vdc=(1/2π)∫Vm sinwt dwt
=(Vm/2π)[-cosπ+cos0]
=(Vm/2π).2
=Vm/π
wkt:Vrms=Vm/2
RIPPLE FACTOR
τ=√((Vrms/Vdc)^2-1)
τ=(√π^2/4)-1
τ=1.211
EFFICIENCY:
The ratio of DC output ability to the air-conditioning input ability is known equally rectifier efficiency.
η=(Vdc^2/Rl)/(Vrms^2/Rl)
=4/π^2
η=40.60%
TRANSFORMER UTILISATION FACTOR:
The ratio of the dc ability delivered to the charge to the air-conditioning rating of the transformer secondary.
Tuf=DCpower delivered to the load/AC rating of the transformer
Tuf=Vdc.Idc/Vrms.Irms
=2√2/π^2
=0.287
NOTE:Here the Irms is taken equally Im/2 because the circuit plant alone on i one-half of the wheel of the input a.c voltage.
i)Half moving ridge Rectifier
ii)full moving ridge rectifier (center tapped)
iii)bridge rectifier
lets perish into the types inwards detail:
HALF WAVE RECTIFIER:
WORKING:
The a.c indicate input (normally 220-240v) is straightly fed into a pace downwards transformer. Since the working status of the diode is express upto few volts, nosotros receive got to pace downwards the high voltage input. then the voltage is fed into the pn diode. at that topographic point are 2 types of modes on the pn junction diode
CASE 1:
when the positive one-half of the a.c input is flows through the diode, the positive finally flows through the p side of the diode thus it is inwards forrad bias thus the diode conducts as well as a pulsating one-half wheel output is obtained.
CASE 2:
when the negative one-half of the a.c input is flows through the diode, the negative finally flows though the n side of the diode thus it is inwards opposite bias condition, thus the diode acts equally a off switch as well as thus no output is obtained.
Then the electrical current flows through the capacitor connected inwards series. The capacitor by as well as large turns the pulsating output into a constant dc output inwards other words it acts equally a filter. thus the output is obtained equally dc.
OUTPUT AND INPUT WAVEFORM OF HALF WAVE RECTIFIER:
note:the showtime waveform is the output as well as the instant is the a.c input
TO detect Vdc:
Vdc=(1/2π)∫Vm sinwt dwt
=(Vm/2π)[-cosπ+cos0]
=(Vm/2π).2
=Vm/π
wkt:Vrms=Vm/2
RIPPLE FACTOR
τ=√((Vrms/Vdc)^2-1)
τ=(√π^2/4)-1
τ=1.211
EFFICIENCY:
The ratio of DC output ability to the air-conditioning input ability is known equally rectifier efficiency.
η=(Vdc^2/Rl)/(Vrms^2/Rl)
=4/π^2
η=40.60%
TRANSFORMER UTILISATION FACTOR:
The ratio of the dc ability delivered to the charge to the air-conditioning rating of the transformer secondary.
Tuf=DCpower delivered to the load/AC rating of the transformer
Tuf=Vdc.Idc/Vrms.Irms
=2√2/π^2
=0.287
NOTE:Here the Irms is taken equally Im/2 because the circuit plant alone on i one-half of the wheel of the input a.c voltage.
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