
VLF-3 Rev #1C Assembly Instructions
10
1a. Sort and Install Resistors
Remove the resistors from Bag 1. Leave the inductors for later installation.
The colored bands on the resistors indicate the
resistance using a color code. This table indicates
how to convert each color to its numerical equivalent.
To read a resistor code, first locate the gold band and
read the colors in order from the other end. (All
resistors in this kit have a gold band indicating 5%
tolerance.) The first two bands indicate digits in the
resistance, the third band (called the multiplier)
indicates the number of zeroes to be added to the
digits to obtain the resistance.
(NOTE: 1000 = kilo = k ; 1,000,000 = mega = Meg)
What is the resistance for each of the following?
Example 1
Example 2
Example 3
Example 4
Band 1
Band 2
Band 3
brown
black
brown
yellow
violet
orange
red
black
green
orange
orange
orange
Band 1
Band 2
Band 3
1
0
1
4
7
3
2
0
5
3
3
3
Resistance
100
100
Ω
47000
47 k
Ω
2000000
2 Meg
Ω
33000
33 k
Ω
Use the resistor code to identify and sort all of the resistors. One good way to keep
them sorted is to tape one end to a piece of paper and write the resistance and
component number (R1, R2, etc.). Once you have identified and sorted all of the
resistors, you are ready to solder them to the PCB.
Bag 1 Contents
Resistors:
R1
560 k
Ω
R2
10
Ω
R3
2.2 Meg
Ω
R4
22 Meg
Ω
R5
680
Ω
R6, R12
220
Ω
R7, R26 10k pots in Bag #4
R8
43 k
Ω
R9, R17
10 k
Ω
R10, R13
2.2 k
Ω
R11
470
Ω
R14
100 k
Ω
R15, R16, R20
20 k
Ω
R18
15 k
Ω
R19, R25, R27
100
Ω
R21, R22, R23, R24 1 k
Ω
R28
270 k
Ω
Inductors:
L1
3.9 mH
L2
150 mH