Heathkit CM 1 Assembly Manual

Page 1

PRICE-$130

Assembling

and U 'ng-Your...

DIRECT READING
APACITY METER

ODEL CM-'|

HEATH COMPANY

A Subsidiary of Dayslrom lnc,

BENTON HARBOR, MICHIGAN

Page 2

STANDARD com (on: '-_- nrslsrons AND (morons

INSULATED FIRST rum;
AXIAL LEAD '9st UNINSULATED BODY coLon
I mm Color First Figure
V s \ gfiiu i
n
-% s s § =. m 2
§ § \ \ ORANGE . .3
*\ \\ \\ is YELLOW 4
lilo-Inn GREEN 5
IAIIIIpII-r BLUE 6
In and m 51.1115:qu quIvu Kg? -;
Wins: "a .1 uhm
mannina'a... qua WHITE 9

SECOND nrNe 111nm nm'c
END COLOR DOT C0110
sew-1.1 Figure Multiplier 15C CERAMIC MM (00!
' ' 5-D!» 3«Dot
{ 3 (.1...in
g 033 MuIleN-
4. , 0:000 nlmm
5 00.000
6 0 003,033
7 ,0D .0
8 00,000,000 "'V- ("V-
9 000,000,000

RADIAL lEAD DOT RESISTOR
Mlllipliu

Temp.-

coon.

5-DOT RADIAL LEAD CERAMIC CAPACITOR

EXTENDED RANGE TC CERAMIC NICAP
Cupiuiiy

Tamp. («a-0.

, 1 Tnllnuu
1......" Inflem_ m. up 1.. w: Mulllplilr 01-111mm Tel-mun 0_
RADIAL [EAD (BAND) RESISTOR - DV-PASS COUPLING CERAMIC CAPACITOR AXIAL LEAD CERAMIC CAPACITOR I
""""" ("mm reinp. run. (npnrltv
anInll
m n,"- (P")
Mulllplllr Iol-mnu '°""""
Tnlcvnnu I Fill".

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 hand on
resistors" determines tolerance rating as follows: Gold: 5%,
silver = 10% Absence of the fourth band indicates a 20%
tolerance rating:

MOLDED MICA TYPE CAPACITORS

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 56 watt, 1 or 2 watt may be color coded but the first
band will be double width.

"Int

In 2nd gsiunlsrmnnm

CURRENT STANDARD CODE RMA 3-DOT (OBSOLETE) BUTTON SILVER MICA
mm. m) 2'.%5ll'lifi"li'" {:3 RATED 500 W.V.D.C. i .107. TOL. airplay. '
Iluk (IAN) Mulliplllr RMA "Vlllnllsv rum-ma u~
(Inns mu..." (H 7"l s.lsirnifimm Firm hip"avd digll nd 3::
In . RMA (S-DOT OBSOLETE CODE) RMA 6-DOT (OBSOLETE) 7 RMA A-DOT (OBSOLETE)
jag-"firm "I'" m;::::*®® "'"""" Thri}$ignifimnl Fiuuus w 1'
mm... Multipllor 3rd . " "' 6'

\\1\\ \\ \\

- Mulllplll:

Walla... Vlllnnl w \i ® Mulvlpliu
WE AV \\\\® MW" °"""" Ming-1mm... "nun '
Tclerlnu Worklnl \\ \® TDI-mnu WorklnaVnIlune
Valiant ., ' '

MOLDED PAPER TYPE CAPACITORS

runuun CAPACITOR

73} SIn-Ifirun! "gm
Mullinlilr

. Normally
\ s \\ u
= I |§I§ §§ =1 sin-m:- or

"In... 1... 31mm...
In Vanu- Flum-
A 1 £191» volluul ruling Indium mm Illnn 000 v.

Add 1 nm In ml at 2 digil numb-r.

MOLDED ELAT CAPACITOR

(Dmmuriul (Id-

, Ilurk
3de

JAN. CODE CAPACITOR

Wailing Volts

Mullipliu

loluunu

2nd
1;: gilrnifiml "In" (hnrnxullslll

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 X 100 or 300 volts. Blue =
6 X 100 or 600 volts. ,

In the design of Heathkits, the temperature coeIIicient of ceramic
or mica capacitors is not generally a critical factor and there-
fore Heathkit manuals avoid reference to temperature coelli-

cient specifications.
Comm nI Conlmlub

ASSEMBLY AND OPERATION OF THE
HEATHKIT DIRECT READING

CAPACITY METER
MODELCMJ

23%;?
HTMHKI

SPECIFICATIONS

Ranges. . . . . . . . . . . . . .. .100-1000 unf; .01-.1 nfd full scale
Tubes 6BX7GTOseillator

6X5GT Rectifier

0A2 Voltage Regulator
. Easy to read 4 1/2" meter with linear scale and

streamlined case; 50 microampere movement
Calibrating Condensers. . . . . . . . . . . . . . . . . . . .. 34% for 100 and 1000 uuf ranges

i2% for 0.01 and 0.1 ufd ranges

Power Requirements. . . . . . . . . . . . . . . . . . . . . . . . 105- 125 volts AC, 50/60 cycles, 25 watts
Dimensions................................ 7 3/8"high x 411/16"wide x4 1/8"deep
NetWeight.. .............,.5lbs.
ShippingWeight.............. ......71bs.

Meter

8/24/59

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