Heathkit W3M pwr sm

Page 1

ASSEMBLING
AND USING
YOUR ......

6%

WILLIAMSON TYPE
AMPLIFIER

MODEL W- 3M

HEATH COMPANY

BE N TC)N HAAR BC)R,
AAI C H IG A N

\ 595-106 PRICE $1.00

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' STANDARD COLOR CODE - RESISTORS AND CAPACITORS

INSULATED FIRST RING SECOND RING THIRD RING
AXIAL lEAD [£55103 UNINSULATED noov COLOR END COLOR DOT COLOR
lawn-Insulated Color First Figure Second Figure Multiplier '5 (ERAMK RMA CODE
llnlr- Ron-Insulated BLACK 0 0 None '00! ( . 3-D"
§ \ BROWN 1 1 0 s < a I'm"
\ = RED 2 2 00 Multiplier
\ \ ORANGE 3 3 ,000
YELLOW 4 4 0.000 Tel-rum
L him-u GREEN 5 5 00,000
rare 2 9 0333333
Is! and 2nd Siwlitm "um V ' T C l.
WI" would resistors TIIVO (vilifiir g 8 083833.830 mp. "
Isl dlllt band defile width 4 9 . . 0
RADIAL LEAD DOT RESISTOR 5-DOT RADIAL LEAD CERAMIC CAPACITOR EXTENDED RANGE TC CERAMIC NICAP
Multiplier
N g a -
\\ g 2- Elm".
I.
I - Multiplier 1' "I."
To emu I" I". TC Multiplier Multiplier Telunnu
RADIAL LEAD (BAND) RESISTOR DY-PASS COUPLING CERAMIC CAPACITOR AXIAL LEAD CERAMIC CAPACITOR
Multiplier WI" 1 c II t '
Vulcan- mp. 00 . entry
1nd Fi|lro (an)
MuItIpIIIr hllrunu "'I'IPII" "I'm"
Tel-Ina In Figure

The standard color code provides all necessary information re-
quired to properly identify color coded resistors and capacitors.
Refer to the color code for numerical values and the zeroes or
multipliers assigned to the colors used. A fourth color band on
resistors determines tolerance rating as follows: Gold = 5%.
silver = 10%. Absence of the fourth band indicates a 20%
tolerance rating.

The physical size of carbon resistors is determined by their
wattage rating. Carbon resistors most commonly used in Heath-
kits are % watt. Higher wattage rated resistors when specified
are progressively larger in physical size. Small wire wound
resistors % watt. 1 or 2 watt may be color coded but the first

band will be double width.

MOLDED MICA TYPE CAPACITORS

CURRENT STANDARD CODE RMA 3-DOT (OBSOLETE) EDITOR SILVER MICA
"mum 11:: gSlgnNifllll "am :3: RATED 500 W.V.D.C. : 20% TOL. (Etna):
MW) Multiplilr mu , """"" Mum. n r
(on: i 1
(Ian Tel-mm. illsd'ISIFiflfl "F" "Impllulvd rIl'lI III! 3'
I i M (540 0350 (0"!) RIM 6-DOT (onsomr) RMA 4-001 (orsorm)
fl Vluki- w m
1 d Signifitlntflyln ' \e ® 1.qu." 2.1 5' fi '
I M'MPH" Voltage _ \W A\\ ®_ Multiplier a" lull rant Eugen: "flu" V d" I.
fnnl \'\ N N
In 1nd Signlfirum Ely-u \\ \ \ n \ _ .
- World-II Valley. I MIltipIilr 3 I ® "'I'MI" M \\\\ _ "WM."
I III"! to End; . . .
I Zia-manila Toleran- Worlririlg Voltage '5' Simian-"Igu-

MOLDED PAPER

TYPE CAPACITORS

TUILILAR CAPACITOR ll - - MOLDED ELAT CAPACITOR JAN. CODE CAPACITOR
2": i Slglrfimn "I." (uni-lurid (uric Sllvu m SIFIGKW
III-MPH" I! l We'll-g Vulu 2nd rig-u
\ \" \ § V V "'"fl' Y "
= R \ § \ \ \ = stumped I" lody
§|§I§ § gs § valu-
Tolemnc 2nd Sip-lira" Multiplier "'I'IPII"
Isl; Voltage ger- nd 1' |
A 2 III It In ml ldl at. IR- 900 V. - - _ o Ill-(I
Add 2.1": "0:11: Jallllluit .fml'i' 1,1Is'r'fi"'""" (harm-mm

The tolerance rating of capacitors is determined by the color
code. For example: red = 2%. green = 5%. etc. The voltage
rating of capacitors is obtained by multiplying the color value
by 100. For example: orange = 3 )< 100 or 300 volts. Blue
6 X 100 or 600 volts

In the design of Heathkits. the temperature coefficient of or
or mica capacitors is not generally a critical factor and
fore Heathkit manuals avoid reference to temperature cu...

cient specifications.
Comm cl Cumulnh