Heathkit GD 1701 Schematic

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I SITE 412-616i I
LOW-FREQUENCY HIGH-FREQUENCY {1; I
I OSCILLATOR OSCILLATOR I
I 5.7 I
TOME I
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fl I
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RSE c4 .3,
TOM -T- l
I 10 + I
I 9 1 14 12 I
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I 6.0 2 Low BATTERY 4421754 U 2 I +
DETECTOR ' _
SCHEMATIC OF THE ' 9 443 "45 I
' R2 I
HEATHKIT ® , f5!) $220K COMPARATOR I .-
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FLOOD ALARM smsoa I I I a3" I
CIRCUIT I I l C1 $500 I
MODEL GD-1701 3 ' . "
(ONE SHOWN)._ __I I I
69 .
I
I
NOTES: I
ALL RESISTORS ARE RATED AT 1/4WATT AND HAVE A TOLERANCE I
0F 5% (K-IOOO , M-l,000,000I. :
ALL CAPACITOR VALUES ARE IN HF (MICROFARADSI. - # A
T. {B}
. 0 THIS SYMBOL INDICATES A WIRE CONNECTION TO THE 3,; #6) :
CIRCUIT BOARD. .
.1 675 :
-0.
.OTHIS SYMBOLINDICATESADC VOLTAGE TAKENFROM THE L _____________ M__-___ .. _ - ___ _ _ _...__ __®_38____ ___@__-‚¬, _...____1
POINT INDICATED TO THE NEGATIVE BATTERY TERMINAL *SENSITIVITY ADJUSTMENT oo~~acno~ CONNECWN
WHEN THE ALARM IS TURNED ON, BUT NOT SOUNDING. FOR FOR &
PARALLEL SECURITY
ALARMS TRANSMITTER

THIS SYMBOL INDICATES A DC VOLTAGE TAKEN FROM
THE POINT INDICATED TO THE NEGATIVE BATTERY
TERMINAL WHEN THE ALARM IS TURNED ON AND SOUNDING.

SP1

9V BATTERY