\
‘
_‘.
…
‘
!_m
\
90.
'
—_
'
..
'
'
_
«
' _
'
switch but Should "be treated individùally. lt
that
"
each lamp installation should have a switch capable of carrying at
least 5 A current. Also, because of the influence of the choke,
electric shocks received from this type of equipment are likely to -
be more severe than from some other sources and so every care should
'
be taken to“ see that condensation, splashing or salt deposits from
.
_
marine aquaria do not find their way on to or into-thé equipment In
this respect there is a ready market waiting for a prope‘rly designed
'
aquarium h‘ood, as a good one does not seem to be available.
-
_
'
—
Switch
,
_
_
—
\
_
'
'
‘;
/
_
.
‘
\
.
Mains supply
Capacitor
.'
_
,
"
'
'
Fluorescent tube
'
'
N°
I_l
'
'
'
'
'
'
'
.
…
-
(a)
v
,
-
,
,
.
‘
Switch
'
_
…
_
'
L
/_°
.
‘:
:
,.
"l\/l'
!
'
'
,
'
'
Chôke/auto
_
.‘
z
‘
amssuppy
.
-
'
_
transformer
t
-
f;
,
Capacitor
'
‘
'
_*
‘
'
‘5
_
',
‘
/,
_
,
,\
Î":=‘.Î,ÏÀŸÏL' Ï
.
_
'_
1
"
”"“""Ï
_.
…
,
: " î«:F1g-._ 35. ;C1rcu1ts”for uorescent ‘l1ght‘1ng Systems—,usmg (a) anautomat10 starter
,
'_
auto transformer; f
*
“Î
',j_
Gombmdtlons of tungsten and… fluorescent hghtmg are oftenused
t®goodeffectltseemsthat theremaÿstlllbeSOmemd1atwnmms
smaarea818madeeasœl‘Ifthemstaatmnœn1t10nsœqulredfŒ
TW@usefuulghtmgaœessesarethed1mmerandthetlmeswltch
î“
' ; f{€iΓï ïÏ' “"Ç }‘
‘—,'{ ‘a“\
;]“v”?
'i‘7Î:
Précédent

- 97/159

Suivant