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1
56
T Y P E
6 0 3 E L E C T R O N I C M U L T I P L I E R
tube which conducts when B29 trigger goes
OFF;
provides negative pulses at mid-index
lines in synchronism with card movement
through punch to turn
OFF
any carry and
punch control triggers in
W
and
X
chassis
which happen to be
ON,
thus preventing
under-punching of card.
829 (IZSN7). Trigger providing 10 index lines
pulses for read-out control; turns
ON
at punch
index lines 9 through O when P7 and P8 make
and turns
OFF
at mid-index points beginning
at 9.5 when P5 and P6 make. Provides nega-
tive pulses at index lines to B30 power tube
and positive pulses at mid-index lines to B28
power tube.
B3 0 (2 5 L6). Normally conducting power tube
providing 10 positive pulses at index lines in
synchronism with card movement through
punch for rolling the product counter when
reading out. Negative pulses produced when
B29 goes
ON
control B30.
BTI
thrrough
B34 (2fiL6). Power tubes for voltage
regulating circuit used to ~rovide $65 volts.
Four tubes are used to furnish the necessary
current demand.
B3 5 (1 2SN7). Trigger providing 9 pulses at punch
mid-index time for read-in control from card;
turns
ON
when
P5
and P6 make at mid-index
lines 9.5 through 1.5, and turns
OFF
when
P7 and P8 make at 8 through 0. Negative
pulses cut off B36 power tube each time B3
5
trigger goes
ON.
8 3 6 (25L6). Normally conducting power rube
providing 9 positive pulses at mid-index times
in synchronism with card movement through
punch for read-in control.
Positive pulses
are applied to the suppressors of the multi-
plier and multiplicand read-in switches.
C l (12SN7). Multiplier read-in trigger for units
position of multiplier counter; turned
ON
when brush wired to this position makes con-
tact through the hole in the card and turned
OFF
by cancelling.
C2 (6SK7). Multiplier read-in switch provided to
control the number of pulses entering the
units position of the multiplier counter; its
grid is conditioned by C I being
ON
and sup-
pressor receives read-in pulses from B36.
C3 (6SK7). Multiplying control switch control-
ling entry of pulses for rolling the units posi-
tion of the multiplier counter; its grid is con-
ditioned by the column shift controls to
conduct only during the 6th column shift
cycle and its suppressor receives a positive
pulse at 12 of each primary cycle from A36
to advance the multiplier counter by I.
C4, C7, CI 0, C13, and C16 (1 ZSN7). Same as C I
for 2nd through 6.th multiplier counter posi-
tions.
C5, C8, C l I, C14, and C17 (6SK7). Same as C2
for 2nd through 6th counter positions.
C6, C9, C12, C15, and C l 8 (6SK7). Same as C3
for 2nd through 6th counter positions.
D l (1 2SN7). Multiplicand read-in trigger for
units position of multiplicand counter; turned
ON
when brush wired to this position makes
contact through a hole in the card and turned
OFF
by cancelling.
0 2 . Test socket for multiplicand input triggers.
0 3 (6SK7). Multiplicand read-in switch provided
to control the number of pulses entering the
units position of the mulriplicand counter.
0 4 , 0 7 , DIO, 0 1 3 , and D l 6 (12SN7). Same as
D l for 2nd through 6rh positions of multi-
plicand.
D51 (12SN7). Read-in inverter to feed ten B
pulses to first position of the multiplicand
counter for rolling the counter when trans-
ferring the multiplicand to the product
counter. Ten A pulses from B6 are inverted
to B pulses for rolling the counter.
D52, D l l , and D l 4 (12SN7). Same as D51 for
2nd through 6th position of multiplicand
counter.
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