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8.
CoI,IPARAToRS
CP-151, CP-r52
The signal
comparator is an automatic switching
device that
con-
sists
of a cornparator arnplifier
and a double-pole,
double-throw
relay.
The amplifier
compares t'$ro input voltages
and energizes or de-energizes
the relaye depending on whether the sum of the input voltages
is glsat-
er than zero (positive)
or less than zero (negative).
There are four separate
comparator unitS
term:inated
at a Quad
Comparator C?-151 and CP-152.
Figure 2.8-I
shows the comparator patching area and, a si.nplifiecl
schematic of one of the comparators.
(The other conr,parators are
identical.)
The relay termination
indicated
by the negative
sign is
the position
of the relay
when the sun of the INl and IN2 input
is
negati-ve, this
is the de-energizecl position
of the reLay.
When the
srm of the IN1 ancl IN2 is positive,
the relay
energizee
ancl tbe raiper
swings to the positive
contact.
(1)
Comparator Switehing Data of CP-151
Relay Sr"ritching Time
T y p i c a l
. . . . . . . . . . . . . .
5
M a x f u n : u n
a l l o w a b I e . . . . . . . , . . 1 0
Sensitivity
T y p i c a l . . . . . . . . . . ,
. . 3 0
M i n l m m
. . . . . . . . . . . . . . 5 0
(2) Comparator Suitching Dat,a of CP-'1,52
niLliseconds
miLliseconds
nillivolts
nillivolts
ReJ-ay Switching Tirre
T y p i e a l . . . . .
. . . . . . . . 3 0 0 n i c r o s e c o n d s
Maximun allowable
... 500 mj-croseconds
- 8 5 -
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