Download - Circuitos de Control Tiristores.ppt
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CIRCUITOS DE CONTROL PARA
TIRISTORES
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UJT
B 2
B 1
N
B 2
B 1
Rbb
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UJT
B 2
B 1
N
B 2
B 1
E E
R B 2
R B 1
P
B 2
B 1
E
X
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UJT
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UJT
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UJT
Parámetros del UJT:
Voltaje entre bases:
Resistencia entre bases:
Relación intrínseca:
Resistencia de base 1:
BBV
BBR
1BR
BBB RR 1
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UJT
Parámetros del UJT:
Resistencia de base 2:
Corriente emisor base 1:
Corriente de disparo:
2BR
12 BBBB RRR
PI
1EBI
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UJT
Parámetros del UJT:
Corriente de valle:
Voltaje de valle:
VI
VV
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UJT
Característica voltaje – corriente, en estado estable
V pV v
I E B 1
V E B 1
Ip
Iv
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UJT
ON:
OFF:
PEBPE IIVV 1
VEB II 1
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OSCILADOR
E
R
P
C
R 2
Q
R o
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OSCILADOR
T
V c
I E B 1T T T
t
t
V p
V v
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OSCILADOR
BBmxVE
XDP VVV
5.0DV
0122
01
RRRR
RREV
BB
BX
BBRRR ,20
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OSCILADOR
122
1
BB
BX RRR
REV
BB
BX RR
REV
2
1
BB
BBX RR
REV
2
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OSCILADOR
21)( KeKtV CR
t
CT
21)0( KKVtV VC
2)( KEtVC
EeEVtV CR
t
VCT
)()(
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OSCILADOR
EeEVVTtV CR
T
VPCT
)()(
CR
T
VPTeEVEV
)(
EV
EVe
V
PCR
T
T
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OSCILADOR
V
PCR
T
VE
VEe T
P
VCR
T
VE
VEe T
)ln(P
V
T VE
VE
CR
T
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OSCILADOR
)ln(P
VT
VE
VET
CR
)ln(P
VT
VEVE
C
TR
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OSCILADOR
PEB II 1
PT
P IR
VE
TP
P RI
VE
mxP
PT R
I
VER
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OSCILADOR
VEB II 1
VT
V IR
VE
VT
V IR
VE
mnV
VT R
I
VER
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OSCILADOR
mxTmn RRR
RPRT
10
EB
VP
I
VVR
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OSCILADOR
E
C
R 2
Q
R o
I
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OSCILADOR
E
R E
P E
C
R 2
Q
R o
R
Z
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OSCILADOR
T
V c
I E B 1T T T
t
t
V p
V v
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OSCILADOR
KdttiC
tv )(1
)(
Iti )(
KtC
Itv )(
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OSCILADOR
BBmxVE
XDP VVV
5.0DV
0122
01
RRRR
RREV
BB
BX
BBRRR ,20
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OSCILADOR
122
1
BB
BX RRR
REV
BB
BX RR
REV
2
1
BB
BBX RR
REV
2
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OSCILADOR
KVtv V )0(
KtC
Itv )(
VVtC
Itv )(
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OSCILADOR
VVtC
Itv )(
VP VTC
IVTtv )(
T
VV
C
I VP
T
VVCI VP
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OSCILADOR
T
VVCI VP
VP III
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OSCILADOR
VVECmn 3
ECmnPE VVV
ER VEVTE
EBRZ VVVTE
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OSCILADOR
I
VR TE
E
RT
BZT
Z
II
VER
ZT
Z
I
VER
10
EB
VP
I
VVR
EET PRRE
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OSCILADOR DE RELAJACIÓN
R E
P E
C
R 2
Q
R o
R
R g
Z 2
Z 1
R sD
V sV pV f
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OSCILADOR DE RELAJACIÓN
w t
w t
w t a
V p
V v
V z 1
V r
V s
I g
V c
p
2p
3p
4p
5p a a
V o
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OSCILADOR DE RELAJACIÓN
BBmxZ VV 1
XDP VVV
5.0DV
0122
011 RRRR
RRVV
BB
BZX
BBRRR ,20
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OSCILADOR DE RELAJACIÓN
122
11
BB
BZX RRR
RVV
BB
BZX RR
RVV
2
11
BB
BBZX RR
RVV
21
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OSCILADOR DE RELAJACIÓN
KVtv V )0(
KtC
Itv )(
VVtC
Itv )(
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OSCILADOR DE RELAJACIÓN
VVtC
Itv )(
VP VTC
IVTtv )(
T
VV
C
I VP
T
VVCI VP
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OSCILADOR DE RELAJACIÓN
T
VVCI VP
VP III
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OSCILADOR DE RELAJACIÓN
VVECmn 3
ECmnPE VVV
ER VEVTE
EBRZ VVVTE
2
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OSCILADOR DE RELAJACIÓN
I
VR TE
E
RT
BZT
Z
II
VER
2
ZT
Z
I
VER 2
10
EB
VP
I
VVR