PS Magazine - MARCH 1981
PS, The Preventative Maintenance Monthly
ISSUE 340
MARCH 1981
r
.
1
±
I
Your equipment's electrical system starts in the battery (or batteriEs, if
there's a combination of batTeries Connected in parallEl or iN sEriEs-or Both).
Uses 2 12-volt batteriesL±
²:³=´µ
¶·
connected in series foR
·
24-volt e¸ectrica¸
s stem
±hese vEhicle batteries are madE Up of
6
cElls² ³ach cell prodUCEs
2
volts² ±hE
´Ells arE connected in "sEriEsµ insidE ¶hE battEr·² IN a sEriEs connEC¶ion, ¶hE
voltages arE addEd² So thE ¶o¶Al volTagE of ThE ¸a¶¶Ery is
12
volts²
±o ¹understand "sEriesµ and º»parallElµ ¸at¶Ery hookUps, LEt¼s start wi¶h
ordinary ½¾cell flashlight bat¶EriEs² ±hEsE ¸a¶tEriEs prodUCE onLy
1 Y
volts¿
Series
PaRallel
Series/PaRallel
E
The vOltages
aRe addEd.
This Is the
3¹volt pOweR
supply iN a
common 2¹cell
flashlightº
ÀoU Can get ¶hE
wholE
s¶ory
oN
"Áasic PriNCipLEs of
³lectriCi¶y" in ±M
9-
8000,
PriNCipLEs of
ÂUtomotivE
VehiclEs, pAge
151.
Total vOltage
stays at
1±
vOltsº ThIs
2»cell
poweR supply
lasts ¼ONgEr
than ½-cellº
±²
¾ach "seRIes¿ paIR Is
3 vOltsº WhEn tHe 2
paÀRs are cOnNected IN
"paRallel'', the vO¼tage
stays at 3 vOltsº BÁut
It's a lONg»¼ifE
3-vO¸t pOwer supp¼y
¾ven
betteR
Is
FM
5²³
506´1,
basIc
lectrIc»
Ity!
'
iP /'
f
(-Z_
Mtv1 V-
.
±
, <'
·
v
VO
A
³!Pc
fµI¶C
the BeginNiNg
Energy Flows In C´mpLµtµ Cir¶uiT
Ãake a look at your Äattery. You'Ål
Æ
find+ Çfor Èositive) on top of one post.
Or the+ is on tHe
É
case nexÊ to thE post.
Or ËOS is printed Ìext to the post.
±he othEr post is identified by Íor
N¸G
(for Îegative).
ÂtÃÄ a "sÅort circuit¿Æ
can't get across unÅess thEre's a
connection-Åike a Wire-from one
battery post to the other. ±he Wire
compÅetes the circuit. Ïs battEry
enerGy moves throuGh a compÅete
circuitÐ the energy becomes
Ñ
EÅectricity.
tÅe wireø¸ Get mIghty
hotÇ YoÈ coȸd GÉt hÈrt!
You can controÅ energy floW
tHrough a circuit With an OÒÓOÔF
sWitch. Õith the sWitch
¹Nº
energy
WilÅ floW through the circuit untiÅ tHe
battery's discharged-dead. YouÖÅÅ
disco×er this the hard Way if you lEa×e
AH»M
pOo·ED!
¼a½B¾
N¸T
bU¿ ÀÁÂ DÃÄ
ÅÆÇvÈ ÉhÊ ËÌSÍÎR ÏWÐÑÒÓ
ÔÕ
.±²
Ö× ØÙ ÚÛÜÝÞßà
fáâã äáåæçè éêëì íîïðñòó
ôõ ö÷ døù úûü
ýþÿĀāĂ㥹Ć
your HeadÅights turned OØ When you
sHut doWn your engine. You'ÅÅ coÙe
Äack to a dead battEry-and you Won't
Äe abÅe to start your engine.
Your battery can Äe recharGed and
Gi×en neW life.
ć9
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