BK Precision 1405 - HIGH VOLTAGE SUPPLY; HIGH VOLTAGE SUPPLY DESCRIPTION

CIRCTIIT
DESCRIPIION
v
v
SWEEP
GENERATOR
at
c4
HMIZONTAL
FINAL
AMPLIFIER
INT
SYNC
FROM
VERT
A
MPL
it-._*
c5
v
(--{
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o
SYNC
CIRCUIT
S2
POSITIONS
ro- roo
(sHowN)
roo
-
rK
lK
-
roK
roK
-
roox
EXT
VR
IO2
I-noR
GAINI
Fig.
4. Horizontal
Channel
Cireuits,
Simplified Diagram.
Fig.
5. Sweep Generator
Cireuit Diagram and
lVaveforms.
the
power
transformer.
A
voltage
doubler,
eomposed
of high
voltage diodes
D107 and
D108,
and eapaeitors
C124, C12
5
and C126,
eonverts the 500 volt
ae
into
-1400
volts de.
Filtering
for
the
high
voltage supply
is
pro-
vided by
eapaeitor
C123.
The
-1400
volts is
oilz
Qil3
FREE
RUNNING_ NO
SYNC
APPLIED
Qil5
EMITTER
Qil3
COLLECTOR
Q
ll3
EASE
SAWTOOTH
4",
WITH
SYNC
APPLIEO
S
YNC
sTGNAL
J U
m
[l*€Etl
I
vanr
I
VR4
Q
ll3
EMITTER
oil3
COLLECTOR
Qil3
BASE
___{€
I
co
o\sz
-
v
*-1---lt------o
\
lcse
H+e
v
11