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IDENTIFYING RESISTOR VALUES

Use the following information as a guide in properly identifying the value of resistors.

BAND 1

1st Digit

Color

Digit

Black

0

Brown

1

Red

2

Orange

3

Yellow

4

Green

5

Blue

6

Violet

7

Gray

8

White

9

BAND 2

2nd Digit

Color

Digit

Black

0

Brown

1

Red

2

Orange

3

Yellow

4

Green

5

Blue

6

Violet

7

Gray

8

White

9

Multiplier

Color

Multiplier

Black

1

Brown

10

Red

100

Orange

1,000

Yellow

10,000

Green

100,000

Blue

1,000,000

Silver

0.01

Gold

0.1

Resistance

Tolerance

Color

Tolerance

Silver

+10%

Gold

+5%

Brown

+1%

Red

+2%

Orange

+3%

Green

+.5%

Blue

+.25%

Violet

+.1%

BANDS

1

2

Multiplier

Tolerance

IDENTIFYING CAPACITOR VALUES

Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or 

μ

F (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.

Second Digit

First Digit

Multiplier

Tolerance

The letter M indicates a tolerance of +20%
The letter K indicates a tolerance of +10%
The letter J indicates a tolerance of +5%

For  the  No.

0

1

2

3

4

5

8

9

Multiply By

1

10

100

1k

10k 100k .01

0.1

Multiplier

Note:  The letter “R” may be used at times
to signify a decimal point; as in 3R3 = 3.3

103K

100V

Maximum Working Voltage

The value is 10 x 1,000 = 10,000pF or .01

μ

F  100V

10

μ

F 16V

METRIC UNITS AND CONVERSIONS

Abbreviation

Means

Multiply Unit By

Or

p

Pico

.000000000001

10

-12

n

nano

.000000001

10

-9

μ

micro

.000001

10

-6

m

milli

.001

10

-3

unit

1

10

0

k

kilo

1,000

10

3

M

mega

1,000,000

10

6

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

Summary of Contents for AK-100

Page 1: ...on Manual Copyright 2004 1994 by Elenco Electronics Inc All rights reserved Revised 2004 REV I 752601 No part of this book shall be reproduced by any means electronic photocopying or otherwise without...

Page 2: ...152200 1 R5 47k 5 1 4W yellow violet orange gold 154700 2 R4A R6A 56k 5 1 4W green blue orange gold 155600 1 VR1 200 Trim Pot 191321 CAPACITORS Qty Symbol Value Description Part 2 C4 C5 02 F 203 or 02...

Page 3: ...r 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 Second Digit First Digit Multipli...

Page 4: ...se in resistor values Place your answer in the box beneath the resistor Answers are on the bottom of this page 1 brown green red gold 3 brown black yellow gold 5 yellow violet brown gold 7 yellow viol...

Page 5: ...ratio of tin to lead The most common ratios are 63 37 60 40 and 50 50 The first number indicates the amount of tin and the second is lead A 60 40 solder has 60 tin and 40 lead Solder with a greater ti...

Page 6: ...ves to the heating element if left in place for extended periods of time Periodic removal of the tip is therefore advisable Tip Cleaning A good clean solder tip makes soldering much easier The tip sho...

Page 7: ...he iron tip with a wet sponge to remove the solder You can also use solder wick as described on page 7 Solder Resist The PC board is covered with solder resist over areas that are not to be soldered T...

Page 8: ...procedure four more times Wide Gaps For wider gaps in a copper foil a solder bridge can not be used A small wire would be used to bridge the copper as shown in Figure 11 Six bridges will be made acro...

Page 9: ...the iron and wick are removed the solder should be removed You need to repeat the process if some solder remains If necessary repeat the procedure until all of the unwanted solder is removed After th...

Page 10: ...causing Q1 or Q2 to conduct The output will be a square wave The frequency is determined by the time constants of resistor R6 and capacitor C1 also R4 and C2 Two LED diodes are placed in the collecto...

Page 11: ...o cover the connection 3 Excessive solder could make connections that you did not intend to between adjacent foil areas or terminals Heat Sinking Electronic components such as transistors IC s and dio...

Page 12: ...Electrolytic capacitors have polarity Be sure to mount them with the negative lead marked on side in the correct hole Figure A Solder the Red Positive lead of the battery snap to the hole marked on t...

Page 13: ...d see Figure E R4 22k 5 W Resistor red red orange gold see Figure E C4 02 F or 022 F Discap C1 10 F Electrolytic Lytic see Figure B R1 470 5 W Resistor yellow violet brown gold see Figure E Jumper Wir...

Page 14: ...Q2 for shorts Remember that there are two oscillators If no sound comes out of the speaker but the LED flashes alternately then the 555 timer is not working Be sure that the volume control is at maxi...

Page 15: ...of two opposing forces or properties Printed Circuit Board A board used for mounting electrical components Components are connected using metal traces printed on the board instead of wires Resistor Co...

Page 16: ...soldering D oxidizing 5 Proper solder adhesion requires that the metal surface to be A solder free B clean C greasy D cold 6 Solder wick is used to A remove solder B solder in small parts C cleaning t...

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