Elenco Electronics K-37 Assembly And Instruction Manual
RESISTANCE SUBSTITUTION BOX
MODEL K-37
Assembly and Instruction Manual
Elenco®Electronics, Inc.
ight © 2004 b
yr
Cop
t of this book shall be reproduced b
No par
y Elenco
®
Electronics
y an
y means;
, Inc.
ights reser
All r
electronic
ved. 753400
, photocopying, or otherwise without written permission from the publisher.
The Resistance Substitution Box is a convenient instrument in determining the desired resistance values in
circuits under design or test. The values selected for your resistance substitution box were determined to be
the most commonly used in modern solid-state circuits. The values are from 10W to 1,000kW (1 meg) in 24
steps. All resistors are 5% tolerance 1/2 watt.
PARTS LIST
If you are a student, and any parts are missing or damaged, please see instructor or bookstore.
If you purchased this kit from a distributor, catalog, etc., please contact Elenco®Electronics (address/phone/email is at the back of this manual) for additional assistance, if needed. DO NOT contact your place of purchase
as they will not be able to help you.
RESISTORS
Qty. Symbol Description Color Code Part #
1 R1 10W 5% 1/2W brown-black-black-gold 121001
1 R2 22W 5% 1/2W red-red-black-gold 122201
1 R3 47W 5% 1/2W yellow-violet-black-gold 124701
1 R4 100W 5% 1/2W brown-black-brown-gold 131001
1 R5 220W 5% 1/2W red-red-brown-gold 132201
1 R6 330W 5% 1/2W orange-orange-brown-gold 133301
1 R7 470W 5% 1/2W yellow-violet-brown-gold 134701
1 R8 680
1 R9 1k
1 R10
1 R11
1 R12 4.7kW 5% 1/2W yello
1 R13 6.8k
1 R14
1 R15
1 R16
1 R17 47kW 5% 1/2W yello
1 R18 68kW 5% 1/2W
1 R19 100k
1 R20 220k
1 R21
1 R22 470kW 5% 1/2W yellow-violet-yellow-gold 164701
1 R23 680kW 5% 1/2W blue-gray-yellow-gold 166801
R24 1M
1
W 5% 1/2W
W 5% 1/2W
2.2k
W 5% 1/2W
3.3kW 5% 1/2W or
W 5% 1/2W
10k
W 5% 1/2W
22k
W 5% 1/2W red-red-or
33kW 5% 1/2W or
W 5% 1/2W
W 5% 1/2W
330k
W 5% 1/2W or
W 5% 1/2W
blue-gray-brown-gold 136801
brown-blac
red-red-red-gold
ange-or
w-violet-red-gold
blue-gray-red-gold 146801
wn-blac
bro
ange-or
w-violet-or
blue-g
brown-blac
red-red-yellow-gold
ange-orange-y
brown-black-green-gold 171001
k-red-gold
ange-red-gold 143301
ange-gold 151001
k-or
ange-gold 152201
ange-orange-gold
ange-gold 154701
ange-gold 156801
ray-or
k-yello
w-gold
ellow-gold 163301
141001
142201
144701
153301
161001
162201
Qty. Description Part #
1 PC Board 517007
1 Switch SPDT PC Mount 541103
2 Switch 12 Position 542013
2 Knob 622009
1
4
2 Nut 9mm 644102
2 Washer 9mm x 15mm 645103
1 Alligator Clip Black 680001
1 Alligator Clip Red 680002
1
1
1 Solder 9ST4
Case with Co
Screw 4 x 1/2” Phil A 642465
Wire Blac
Wire Red Str
ver 62RS400
k Stranded 12” 814210
anded 12”
MISCELLANEOUS
814215
-1-
PARTS IDENTIFICATION
Switch PC Mount
witch 12 Position
S
9mm Nut
PC Board
Resistor
Washer
Alligator Clip
IDENTIFYING RESISTOR VALUES
Use the follo
wing inf
Color Digit
Blac
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
ay
Gr
White 9
ormation as a guide in proper
BAND 1
1st Digit
k
0
8
BAND 2
2nd Digit
Color Digit
k
Blac
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
ay
Gr
White 9
1
ly identifying the v
Multiplier
Color Multiplier
0
8
Black 1
Brown 10
Red 100
ange
Or
Yellow 10,000
Green 100,000
Blue 1,000,000
Silver 0.01
Gold 0.1
BANDS
2 Multiplier T
alue of resistors.
Color Tolerance
Silver ±10%
Gold ±5%
Brown ±1%
1,000
oler
ance
Red ±2%
Orange ±3%
Green ±0.5%
Blue ±0.25%
Violet ±0.1%
Resistance
Tolerance
-2-
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