HP 5245L Service Manual

A. WITHOUT
STORAGE
I. RUNNING
STATE WITH
TRANSISTOR
A
CONDUCT-
tNG, LA!|P
A
FtRED,
LAMP A
EXTINGUISHED.
-
t30v
2. LAMP-S
CHANGE
STATE,
LAMP A
FIRED,
LAMP
A
EXTINGUISHED.
INSUFFICIENT
VOTTAGE
TO.
FIRE LAMP A
390K
-48V
a
38V
\
-tov
-
rov
B.
WITH
STORAGE
I.
STORAGL
TRANSISTOR A
CONDUCTING.
BUT LAMP
A
CANNOT FIRE:
unue
E
oru,
tRnrusrsron
A
NOT CONDUCTING.
2.
TRANSFER
BEGINS
CONDITIONS DURING
INITIAL
PERIOD
OF
TRANSFER
PULSE
3.
TRANSFER
COMPLETE
CONDITIONS
DURING
FINAL
PERIOD
OF
TRANSFER
PULSE
LAMP
A
CANNOT
FIRE
l
uaup E
REMAINS
ON
J
MOMENTARY
RISE
IN
VOLTAGE
WHILE
LAMP A IONIZES
\
_,uu
LAMP
A
REMAINS
ON
UNTIL
LAMP
A
FIRES
,l
LAMP
A
IS
loNlzlNG
1
-t8v
-8V
NOTE:
LAMP
VOLTAGES,TYP:
FIRES
LAMP
AT
7OV
AFTER
IONIZATION
DROP ACROSS
STABILIZES
AT
APPROXIMATELY
55V.
-t30v
COLLECTOR
CONNECTION
-
l30v
a
55.5V
55V
FORWARD
BIASED
(coNDuc-
TION)
-
r30v
'2
92V
\+
-r30v
*tRnrusrER
PULSE
-l
r+lgv
35MTLLTSECONDSI
l_rov
Section
II
Figure
2
-8
Model
5245L
02349
-1
05245-B-9
!
2-8
Figure
2
-8.
Lamp
Control

HP 5245L Specifications

General

Brand	HP
Model	5245L
Category	Cash Counter
Language	English