Heathkit IB 1101 Schematic

Page 1

BOTTOM

R24
27K

VIEW

7O 06

0123455789

0 1

23456789

W

OVERRANGE

(OVER)
LAMP

c-T

é Re:
100 K
I 5%

100 03
5 45v 28 8.2 69099090000 09099090000
+1 v
15158913T4T11012 I615691314111012 161589T3|411T01 T6155§1314111012 1615891314111012
IC-1 IC-2 Ic-3 ' lC-4 IC-S ,
DECODER DRIVER DECODER DRIVER DECODER DRIVER DECODER DRTVER DECDDER DRIVER
3 6 7 4 . 6 7 4 3 6 7 4 _ 3 6 7 4 3 5 7 4
5 8 9 4 17 20 19 18 5 9 8 4 17 20 19 18 15- IO 9 16 . 2
2 I [I 13
lC-6 2 3 lC-7 _12 _ .__4 38 4 L
MEMORY LATCHES 23 23 MEMORY LATCHES 23 3 MEMORY LATCH 13
C: A a C D A B c D A B c D A a C A B C '3 ,
477 a u 10 3 16 2: 22 T! 2 10 n F +16 21 22 I5 +3 IT 2
l ' J 9 a 1* A 9 a 1 la a e n __12 g s 11 8
INPUT 92 A a c o A a c n A s c o A a c D a
(mom mm.) 53; n J Q J Q a 14 T IC-11 u T Tc-12 w T I013 14 T IC-14 5 IC-ISB
4 DECADE COUNTER DECADE COUNTER DECADE COUNTER DECADE COUNTER OVERRANGE
6 3 TIC-24B JIC-ZB a DETECTOR
47 m 3 5 Re I Re I Re i 2 5 °
1
TM DI C 11 C Q
m 2 (+JRESET
+sv
O -O O _. c-a RESET
('9
680 PP 'IO TRANSFER
TI *- I
. GATE 4 IC-22C
9 I
EXTERNAL GATE LAMP . IC-ZaB a ' 3 , 3
INLET IC-Z 2A . IC-23A
cu R34
"2 «PF .000 I, . 2-
ORG " n 12 5
J H ICC-228 RESET T V ggg -:
13. 57°
I 433%?) IC-27
*5" . REGULATOR
3 ___________ . _______ __ _________ R3305 _$_V_QC_N _________________ __ _________ IN PU T
/ MHzo s, KHZ MH24 31023 (2"2
I ORG ",1 RN
/
_! #29 135: I, GRN OUTPUT
cm -- 60 I . GROUND
005 5" L2: 1 0 E L 1; , 'ITo 'tli l, A12 1 .g E IL Isa I: _ |To f5 3 A12 1 10 Te 3__ It; I 0 To 3 0 Q12 \\
vs 1
- | -17 1 I4 lC-IB n u I049 11 I4 I020 11 H IC-2I 11 I - \
---+5 D DECADEICCCISNTER D 14 DECAOECCOUNTEFI ° N f r DECADE COUNTER ° OECAOE COUNTER D T DECADE COUNTER o T DECADE COUNTER D C 15A \\ SOURCE
mmz / VOLTAGES
CRYSTAL / '- [C 27
I ~ ., _
= '1" I .- - -. ® +5-vo T > V
II 2: T" I REGULALTOR "EGULATEDH
I MHZ KHZ : OFF ON : L
| r - 1 ' I/4 AME T
p +5v ' : I . SLOW BLOW
E : F101 I (f) E : REES VATED
l , L
uc-z IC-I I 16-" C1 Hv : {{pr E-....s..°_'_.. : -: . "
:23 :3ng I SLOW aLow T GROUNDS ' .
5-4 IC:T4 l I 32mm:
IC-s 'C_ '5 l ' some HZ
'95 12-13 ' 0w l =-
Ic-19 9 I I
:23? I 1.1 - -L> T:
' RANGE SWITCH +1 v
mm; L I m m "6m
0 I = '
g I 3102C ® ® I I
V : : [:1 III II]
I
L------------_-----------------------------' swab © @ Q -_'J
NOTES: STOZA © ® 0
7. 0 THIS SYMBOL INDICATES A LETTERED CIRCUIT
BOARD CONNECTION.
1. ALL RESISTORS ARE 1/4 WATT UNLESS MARKED OTHERWISE.
i . 8.0THIS SYMBOL INDICATES A DC VOLTAGE TAKEN
5'5" VALUES ARE V OHMS 1000' M "000-000" WITH A HIGH IMPEDANCE INPUT VOLTMEIER FROM SCHEMATIC OF THE
E AR D OTHERWISE THE INPUT SHORTED TO GROUND AND THE RANGE HEATHKIT®
3. ALL CAPACITOR VALUES ARE IN 11F UNLESS MARKED OTHERWISE, SWITCH IN THE MHZ POSITION. I
4- REFER TO THE CHASSIS PHOTOGRAPHS AND CIRCUIT BOARD 9.---THIS SYMBOL INDICATES A VOLTAGE SUPPLY OUTPUT.

5.

X-RAY VIEWS FOR THE PHYSICAL LOCATION OF PARTS.
v THIS SYMBOL INDICATES A CIRCUIT BOARD GROUND.

.E THIS SYMBOL INDICATES A CHASSIS GROUND.

10.--> THIS SYMBOL INDICATES A CLOCKWISE ROTATION 0F
CONTROLS AS VIEWED FROM THE CONTROL END 0R
ACCESSIBLE SIDE.

MODEL lB-1101
FREQUENCY COUNTER

Page 2

BOTTOM

VIEW
V1
70 06
BO 05
14090 070,3---- 0 1 2 3
100 03
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+15v +5V 120 O1
16 15 a 9
IC
OECODE
3 2
5 8
ca
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( INPUT L) TR
FRONT PANE
Aw a s H J G 9
4c?! TIC-24A L? 3 119245
m
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EXTERNAL GATE LAMP
T5157
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ORG " 5|
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005 F 5,4 H _ . I .
12 1 10 I I;_ I1; 1 1o Ti I; 1/ 12 1 19_ V IL AP12 l1 |1o Te 3
"2 A
Y: TILE BASE /
°S° IC-16 on T 1c-17 o 11 j 14 r 1c-1a D .. at 1c-19 nu
T DECADE COUNTER 4 DECADE counran / DECADE COUNTER DECADE COUNTER
am I
IMHZ I-SOPF I -_
CRYSTAL I
E R3! I .
150
I
. I, SIOZC ----------.---------I
/ 33; ii: :240 VAC 50/60 Hz
I
l
>+5v I
. F11
1-;- L $- -$- ch HV : -d
' ' _ 1/
12:; 1c '5 :2: 12.; I g
ICB IC-13
1c-4 1c-14 l
:21: ;
lC-B _ - ~.1
I313 BLK ' .-
ICZO '
1c-21 I 0-1-
. 24OVAC
0 Isa/30H: _
l -
I
I
V I . _
I
I.

NOTES:

1. ALL RESISTORS ARE 1/4 WATT UNLESS MARKED OTHERWISE.
RESISTOR VALUES ARE IN OHMS [Ir-1000, M-I,DOD,DDOI.

2. ALL RESISTDRS ARE 101- UNLESS MARKED OTHERWISE.

3. ALL CAPACITOR VALUES ARE IN uF UNLESS MARKED OTHERWISE.

4. REFER TO THE CHASSIS PHOTOGRAPHS AND CIRCUIT BOARD
X-RAY VIEWS FOR THE PHYSICAL LOCATION OF PARTS. '

5. v THIS SYMBOL INDICATES A CIRCUIT BOARD GROUND.
6. 12-" THIS SYMBOL INDICATES A CHASSIS GROUND.

7. THIS SYMBOL INDICATES A LETTERED CIRCUIT
BOARD CONNECTION,

8.0THIS SYMBOL INDICATES A DC VOLTAGE TAKEN
WITH A HIGH IMPEDANCE INPUT VOLTMETER FROM
THE POINT INDICATED T0 CHASSIS GROUND WITH
THE INPUT SHORTED T0 GROUND AND THE RANGE
SWITCH IN THE MHZ POSITION.

9.--I-TH|S SYMBOL INDICATES A VOLTAGE SUPPLY OUTPUT.

TIL-9TH SYMBOL INDICATES A CLOCKWISE ROTATION OF
CONTROLS AS VIEWED FROM THE CONTROL END OR
ACCESSIBLE SIDE.