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Tektronix 454A User Manual

Tektronix 454A
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Ci r cui t
Descr i
p
t i on- 454zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
/
R
454A
0624
Aut o
M
ul t i vi br at or
3-
1
8
S650
- -
S
L
O
PE
- - - - -
¹
¹
¹
¹
¹
¹
¹
¹
¹
¯
-
¯
'
- - - - -
. *
+75
V
C
R
651
V
*
C651
C652
- 12
V
R637
+12
V
R
658
C659
i
R
659
R
664
C664
R
656
R
657
0664
R
666
7
L
664
C666
C
u
r
r
e
n
t
P
at
h
R
ever se-
B
i ase
d
Di o
d
e
F
i g
.
3- 12
.
Tr i gger
p
at
h
f or
posi t i ve- sl o
p
e
t r i gger i
n
g
( si m
p
l i f i e
d
Tr i gger
Gener at or
d
i agr am)
.
¹
goi ng p
ul se at
t
h
e
b
ase
of
0685
.
C
R
680
bl oc
k
s
any
t
h
er e
i s
no
c
u
r r ent
f l ow
t
h
r oug
h
Q694,
i t s
col l ect or
l evel
negat i ve- goi ng
p
u
l ses
i n
t
h
e
secon
d ar y
of
¤
680
.
goes
negat i ve
.
C
R
657
I
C662
-
T
h
e
basi c
conf i gur at i on
of
t
h
e
Aut o
M
ul t i vi br at or
st age
i s
±
monost abl e
mul t i vi
b
r at or
ma
d
e
up
of
Q685
an
d
Q695
.
Wh
en
±
t r i gger
si gnal
i s
p
r esent ,
t
h
e p
osi t i ve- goi ng
p
ul ses
T
h
i s
st age
pr o
d
u
ces
t
h
e
cont r ol
pu
l se
f or
t
h
e
aut o- t r i gger
f r om
t
h
e
A
u
t o
Pu
l se
Am
p
l i f i er
st age
t ur n
Q685
on
.
T
h
e
gat e
ci r cui t s
l ocat e
d
i n
t
h
e
Swee
p
Gener at or
ci r c
u
i t
.
col l ect or
of
Q685
goes
negat i ve
an
d
C689
d
i sc
h
ar ges
U
n
d
er
q ui escent
condi t i ons
( no
t r i gger
si gnal ) ,
t
h
e
b
ase
of
r a
p
i dl y
t
h
r o
u
g
h
Q685,
R
699,
R
696
and
LR
695
.
As C689
Q695
i s
h
el
d at
about
- 0
. 3
vol t
by
vol t age d
i vi
d
er
d
i sc
h
ar ges,
t
h
e
cur r ent
f l ow
t
h
r oug
h
R
696
an
d
LR
695
R
696-
R
697-
LR
695
.
T
h
e base of
0685
i s
h
el
d
at
abo
u
t
h
ol ds
Q695
of f
.
Wh
en
C689
i s
f ul l y
d
i sc
h
ar ged
,
t
h
e
cur r ent
- 0
. 65
vol t
by
t
h
e
f or war
d
vol t age
d
r o
p
of
C
R
681
.
Si nce
f l ow
t
h
r oug
h
R
696
an d
LR
695
ceases,
and
Q695
comes
t
h
e b
ase
of
Q695
i s
t
h
e
mor e
p
osi t i ve,
i t
con
d
u
ct s
and
r ai ses
bac
k
on
t o
r eset
t
h
e
m
u
l t i vi br at or
.
Now
C689
begi ns
t o
t
h e emi t t er
l evel
of
Q685
p
osi t i ve
eno
u
g
h
t o
h
ol
d
i t
of f
.
c
h
ar ge
t owar
d
s
+75
vol t s
t
h
r o
u
g h
R
685
.
C
u
r r ent
al so
f l ows
C689
c
h
ar ges
t o
abo
u
t
+13
vol t s
t
h
r ou
g
h
R
685,
w
h
er e
i t i s
t
h
r o
u
g
h
R
690
and
t
h
e
base
of
Q694
goes
negat i ve t o
bi as
i t
cl am
p
e
d
by
C
R
687
an
d
CR
692
.
The
b
ase
of
Q694
i s
h
el
d
at
on
.
T
h
e
col l ect or
l evel
of
Q694
r i ses
p
osi t i ve
t o p r od
uce
t
h
e
a
b
o
u
t
+12
. 6
vol t s
by
C
R
692,
w
h
i c
h
r ever se
b
i ases
i t
.
Si nce
aut o
gat e
out
p
u
t
f or
t
h
e
Swee
p
Gener at or
ci r cui t
.

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Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

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