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CAPACITANCE SUBSTITUTION BOX
MODEL CS-440 / K-38
Assembly and Instruction Manual
ElencoTMElectronics, Inc.
Copyright © 1989 ElencoTMElectronics, Inc. Revised 2003 REV-I 753440
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The Capacitance Substitution Box is a convenient instrument in determining the desired capacitance values in
circuits under design or test. The values selected for your capacitance substitution box were determined to be
the most commonly used in modern solid-state circuits. The values are from 100pF to .1mF in 24 steps.
PARTS LIST
If you are a student, and any parts are missing or damaged, please see instructor or bookstore.
If you purchased this capacitance box kit from a distributor, catalog, etc., please contact Elenco
(address/phone/e-mail is at the back of this manual) for additional assistance, if needed.
CAPACITORS
Qty. Symbol Description Part #
1 R1 100pF (101) 50V 221017
1 R2 150pF (151) 50V 221510
1 R3 220pF (221) 50V 222210
1 R4 330pF (331) 50V 223317
1 R5 470pF (471) 50V 224717
1 R6 560pF (561) 50V 225610
1 R7 680pF (681) 50V 226880
1 R8 820pF (821) 50V 228210
1 R9 1000pF (102) 50V 231035
1 R10 1500pF (152) 50V 231516
1 R11 2200pF (222) 50V 232216
1 R12 3300pF (332) 50V 233310
1 R13 .0047mF (472) 50V 234710
1 R14 .0056mF (562) 100V 235618
1 R15 .0068mF (682) 50V 236810
1 R16 .0082mF (822) 100V 238218
1 R17 .01mF (103) 100V 241017
1 R18 .015mF (153) 100V 241517
1 R19 .022mF (223) 100V 242217
1 R20 .033mF (333) 100V 243317
1 R21 .047mF (473) 100V 244717
1 R22 .056mF (563) 100V 245618
1 R23 .068mF (683) 100V 246818
1 R24 .1mF (104) 100V 251017
TM
Electronics
Qty. Description Part #
1 PC Board 517007
1 PC Mount Switch 541103
2 12 Position Switch 542013
2 Knob 622009
1 Case w/ Cover and Screws 62CS440
2 Nut 9mm 644102
2 Washer 9mm x 15mm 645103
1 Alligator Clip Black 680001
1 Alligator Clip Red 680002
12” Wire Black Stranded 814210
12” Wire Red Stranded 814215
1 Solder Tube 9ST4
MISCELLANEOUS
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PARTS IDENTIFICATION
Switch PC Mount
Switch 12 Position
9mm Nut
PC Board
Capacitor
Washer
Alligator Clip
IDENTIFYING CAPACITOR VALUES
Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or mF (microfarads). Most
capacitors will have their actual value printed on them. Some capacitors may have their value printed in the following
manner. The maximum operating voltage may also be printed on the capacitor.
For the No.01234589
Multiplier
10mF 16V
Multiply By 1 10 100 1k 10k 100k .01 0.1
First Digit
Note: The letter “R” may be used at times
to signify a decimal point; as in 3R3 = 3.3
Second Digit
Multiplier
103K
100V
Tolerance
The letter M indicates a tolerance of +
The letter K indicates a tolerance of +10%
The letter J indicates a tolerance of +5%
20%
Maximum Working Voltage
The value is 10 x 1,000 = 10,000pF or .01mF 100V
METRIC UNITS AND CONVERSIONS
Abbreviation Means Multiply Unit By Or
p Pico .000000000001 10
n nano .000000001 10
m micro .000001 10
m milli .001 10
– unit 1 10
k kilo 1,000 10
M mega 1,000,000 10
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0
3
6
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1. 1,000 pico units = 1 nano unit
2. 1,000 nano units = 1 micro unit
3. 1,000 micro units= 1 milli unit
4. 1,000 milli units = 1 unit
5. 1,000 units = 1 kilo unit
6. 1,000 kilo units= 1 mega unit