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46.
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
R
27~U'0'e-e'oP26
("9" M a in rota card)
I
I
I
C
Rota Card
Passas P Brushes
I
Multiplier Cancellad
Naw R d e Entars
- - -
Rate Cord
Rota
Card
Pos3es
Dia--
Possas
P
Brushes
2 - -
Punching Supprassad
Chacking Suppressed
Figure 50. Sequence o f Operation for Group Multiplication
T o signal a rate card, a 9 is punched in a pre-
determined column and this card column is wired
to the 9 pickup hub.
Then when a 9 is read as
the rate card en,ters the first set of brushes, a cir-
cuit is completed to pick R27 as follows: post 3,
through fuse 7, relay common, R27P coil, R26BU,
P26, 9 hub, control wire, brush hub, individual
brush in first set of brushes, 9 hole in card, contact
roll, common brush, R8B, CB's, to post 1. P26
allows only 9 holes to be recognized. R27 is then
held through its R27H coil, R27-1 points, and
P27 until 13.4 of the same cycle. The sequence
of operations of the above and succeeding circuits
for group multiplying is shown in Figure 50. This
in con-
sequence chart should be studied carefully
'
nection with the group multiplying circuits.
In the following circuits it is assumed that the
factor reversal switch is
OFF
and that the multiplier
counrer contains the rate (or group multiplier).
When R27 picks up, R27-3 points open and per-
mit PI2 to cancel the previous multiplier as P12
is open at this time.
P12 is required in addition
to PI0 because the cancelling of the multiplier
counter must be delayed until it has been deter-
mined whether or not the card entering the first
punch brushes contains a 9.
R27-2 points close
to complete a circuit which provides screen po-
tential to the tubes controlling multiplier read-in,
and thus permit reading of a new factor into the
multiplier counter.
R27-4 sets up the circuit to
R28P coil so that when P28 makes at 12, R28 is
picked, and it holds through its R28H coil, R28A,
and P29 until 8 of the next cycle. The R28B points
set up a circuit to cause R29P coil to be energized
when P3O makes at 14.5 of the cycle following the
pickup of R28.
R29 is held through its R29H
coil, R29AU points, and P31 until 13.4 of the
same cycle.
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