Philips 209 u service manual

Page 1

lllllllllllllllll llllllllllllllllll I llllli l IIIlll Illll llliIllllI IllllIl l llllllllll l I Illllll l llllllllllllilll lI IIlllllI I lll

IlllllIllIllllllIllllllllllillllllllllllllllllllllll"lllllllIlllllllllllIl llllll lllllllllilll.llllIllllllll

TRADER" SERVICE SHEET

806

OUR Continental-type vulws me I set

In the Philips 209V renew? IIItnI
IIIIIIIIIII IIII IIIIIIIII Is not yd IIIIIIII

In llIitish vnlII data tables l>wIIIII1l
II.II.I III. IIIIIII II tllfilvtole gIIpn IIIIIIII
General Notes '
TIII IIIereI II II 342mg (IIIIIs I-I» IIIIII)
34mm] SIIPIIIIQI designed to operate I' IIIII
A.(. or DJ}. mains of 95-115 \' :Inrl I907
260 V. 40100 0/. n the case m' All VII
plOVlSinl) II mIIIIp rm» I gmnIIIpIImI»

IIIIIHIII III lXtt'l'lllIl spE-nkm III-IIIII IIII-
maker IV should not he used IIIIlI i .
[Mr an (inn am] aTII/mnt pun/r ~ [III Im-

her 1946; £120. flux £2 11x 7r/ Fur/[Inn
IIII.
CIRCUIT DESCRIPTION
Aerial Input. Is via coupling roll: Ll
lSWl. L2 [ll.\\',| and L3 (L W) to
single-tuned ciruuts L4, 018 (S.\\'.)I L5.
018 (M.W.) and L6, GM (l..V\.).

Supplement 10 Thu Win/[Ix (5'
Electrical Trader, April 5, 1947

PHILIPS 209U

A.C./D.C.

First I'alvc (VI, Mullard UGHZI) is a
tIiodu heptode operating as frequency
changer with IIIjeIIoI gI-III cquIIIIIg be.
tween triode :IuIl liexode sections.

lriode oscillator anode I-oils L11
(S.W,), L12 (M.VV,) IIIII1 L13 _(l ..W) Int
tuned by 631. Palalle innuinu by 629
(M.\V.) and 011 (LVV ies tracking
by Clo (.\l.\V.) and 03 . .). Reaction
coupling by grid mils L8 (SAN), L9
(.\l.\V.) IIIId L10 (T..W.).

Second Valve (V1, Mullard UCHM) is
IIIIIIIIIII IIIIIIIII heplude. III which the hep-
1Ilde secLion operates as a variable-mu
Intermediate ll'l-ltlleul!) amplifier with
tunedrprunzn'y, tuned-secmidary trans-
IUIIIIIeI- IIIIIII1IIIgs c5, Lu, L15, cc and
cm, L16, L11, 015.

Intermediate "equal! A10 3.

Diode second detector 15 part of double
diode pentmle output valve (V3, Mullard
UEL21) In 'lliLll the diode sermons are

SUPERHET

strapped in parallel. Audio frequency
component in rectified output is developed
across manual volume control R8, which
also acts as diode load resistor, and
passed Vin 8.1. coupling capacitor GIG
and CG. tor R110 CIG. of V2 u'iode
section. which operates as A.F. amplifier.

DC. potential developed across R8 and
R9 in series is applied to the potential
divider R10, R11, from the tapping on
which It is led l .01: :Is GIB. to F.C. and
LF. Valves, giving automatic volume con»
trol. 1.]5. flitel'lllg by cu, m and on
in diode circuit.

Resistance-capacitance coupling by R12,
619 and R13, with LF. filtering by can,
between V2 triode and pentuLle section of
V3. Fixed tone correctIon in anode cir-
cuit by 022. (1.13. potential for V3, to-
gether with fixed GB. for EC. and LF,
valves, is obtained from the drop along
R15 in the H.T. negative lead to chassis.

"' PL-AA-Tf- E'Rfil
R5 R6
\-v
V; l LIA 5 i
A I C15
c5 04 m
IiLI7 !
CL -_
ém
1- my
' ==CI9
. as
n . C7 2 _. . . I?
C8 Sll
L4 5; l- 5? LE
Ll LII
C26 L7
no
5,] 1L5 :4 s7 ' LI2 5n
(. c 9 I Cla
M C27 28 R3 [<4 \ C29 so 17 R8 =': Rl3
L2 cal
t Clo"
2] L6 55 53 us 5I3 an
> O ,
g c; CII
L3 to
cm i [BIL 07 C70
0 L n -
1.: I CZl:

lCS VOLT
POSITION

2lO VOLT
POSlTlON

23S VOLT
PDSlTlON

Circuit diagram of the Philips 209U

VAC DC superhct The VIlves are

of continental type, V1 and V2 being @ E
similax,R8, R9, Ru) and RI! form /

a potential divider across R15, applying KW C VI V; V
a negatlve bias to the A.VlC. line and D 05 VOLT pLUG 200.250 VOLT PLUG N

the signal diode In the LompleIe
circuit diagram, the voltage adiustrnenl is shown set for high-voltage mains, around 200 V, the dotted lines showing the voltage adiuslmcn
mf lmI- -voltage mains Adiustmcrz is affected by the plugs Inset beneath the circuit diagram. To the left of the plugs is a diagrim o

Page 2

\Vilen the receiver is operated from
A.C. mains, H.T. current is supplied by
half-wave recii 11; valve (VA, Mullarii
UYM) which, with D.C. mains, behaves
as a low resintanue. Smoothing is
effecLed by resistor R15 and eleciroiytic
capacitors 023, 624, but the HT. supply
for V3 anode is obtained direct from the
rectifier catliude

Wlien operating 1111 main; rii 190260 Y,
V1, vs and v2 iieuieis together with
Rid, Vil, the Stale] 1111111 aulge- limiting
resisinr R18, and 1' 151015 R19, R20 zil'e
Connected in series .uinss the mains input.
For the 190.225 \' lange only, R20 is
ShOI'irLil'Cllii/Ed.

\Vlieii ope-Pairing 1111111 95415 V 115
VI heater, together with rire scale lamp
and resistor: R15 11nd R19, rue connected

Supplement la The Wireless (9
Electrical

1244913 AP'ILéal 247

in series (R20 being SiiOl'irt' eiiitedl
(IAIOSS the mains input :is one chain: while
Vi, V3 and V2 heaters and R14 form :1
sec-0nd chain atross the mains input.

These two .nmugemenis arr shown
separately in rim cii nit diagram, 11m
luw-iuliage circuit being inset above the.
iligirvuiiflge (11m; the new-usury intercom
iieiliuii: are carried out by means of the
voltage uiijuninieiitr pings.

VALVE ANALYSIS

Valve Voltages and currents given in
the table below are those quoted by the
ilianiifauturers, who give the unsmoutiied
1LT. \oltage us 180 V. Readings were
inken with a 20JOOOVUiHIIS-pald'niL meter.
i-liassi: being iiw negative ronnectinn.

1 Anon, \nfldi Strum Screen
vim. \ nudge i um-ui \olluio- turn-m
( i (111A) . in mm)
'HH 1- 1
1'1 1101121 2 ii~iilluiur 7x n-o
1 1 1112 J15 i
. 1 iii; 4» 1 1
12 i'illill <1 'iriinlil' 1 7s :10
131111121 113.. 1 i. i 1.17 1 7-11
14 1121-1 77 l

T [iliiiniii- tt- .irsir, 1N) Y1 l).(.

K7
fun ------ v ------ n A i.-
E 7 v v v
_ «(Atttiw A C B C
<-
D? 51
. ...,
K13 H19 10
,
=EC24
5-4.
~09
"C25 )1
v4 "
/ . RI;
If
... " ii iii MAW;
c' vD A
SCALE LAMP
\
1114 R19 R19 R20 5.5
. _,

iustment links; in the small diagram inset on the right, the voltage adjustment has been set
igrm of the pin plate to which they are applied, as seen from inside an inverted chassis.

CO

1 } tuning capacitors

PHIL PS
209U

80

MPONENTS AND VALUES
i AiAL'l'lUliS \ iiiilin
iiiFi
\ilii.i]w1li-:L[.\iicib0r n-tirii
hunt] 111101111311
v1 iixt-diiimmcr 0000022
.r-unuilor .. (i-norllz

transformer thed

c (1.0 common.

(101100.. r

.1.\'.(. line decoupling . (mu
0 oirr. M.W. trlickvr 0110013:
.W. flxrd irirunu-r (100114117
.ailoilvi-ulilililliz : 0110047

5.11. s di'ioupiing 1 u- 074

}:nlii I. Y. triinsfiirmu flxi'd I' 1 0- 00010;

inning napat-itnm ...] 1 ii (10111111
\. F. i'nliplimz to \ 2 Hindu .
c 1;. H , 11-1i22
, . 41 1101mm
}LF. bypass camiciiors ...{ W"
coupling iii 1 3 111 nt (11mm
(, l 1'. bypan 11110015
11:17:10

smoothing capacitor
[31115 It I". by-Iin~\

mini re. 5.11 11111 r 110000311
.miul cm. 111.11.1rimmor (1011110212
Aerial tinillt iiiniml 1 (10011492
rirc. M.w. lrimml 0 00111132
cite. 1.11: mi 11-0002
Unillhtorcirclut111111111: timing-2
' lilm rinli'tit. + \nr 11110. ti'l's-«wt,
K EthTIHM "Hinl'h
(oluuu)
111 Al' 111110.000
11: mm 111 1 1x om
112-. V] liqii 1 000 non
114 V] nsc. < or . 17.11111
11:. Vlu 111011.11 iron. 10,0011
in: 11.1 H. 1' fwd 10,000
117 v2 irioocG 11. mirror . mmuii
1121 Manual vn nim- control . mum
119 11 shipper 470011
11m v. \2 fixed (1.13. mul 1 1100000
1111 i A. v.0. potentiui anion 11311111000
kl 2 v2 Irilule annilo loarl . 1,111in
111: v3 11.11. resistor 630 000
1111 pm hen ~ circuit balinni 100
1115 11 vz Vailxcd 0.13.11-
Nor . 120
l: l U .iiniooriiiniz risistnr 1.2011
11 i. 1 .1 mode rum limiter 11'1
Kin H1 um ' -
1:11» Hi :1Li'r 170
:24: 1 niniors 2m
' Shii'ilii il'siriiiii, hii "léi-ni-rnl51111-4.
A |ip1( 1x.
11111151: i'i).\ll'li\li..\'l.\ Valium
(1111111.)
11 (11111! 1giiiil :75
1.: ..Douplingi'oil-1 4011
1:1 ArriulL. w coupling coil 1750
1.1 A0113] 5 W. tuning coil Very low
1.5 Ami-.11 M. w. iuning roll l
1.11 Aillial L W. tuning coil m
L? is) S.W.1enciionsmbiliser 1 wry low
1.x (m nw [Faction mil 1 225
1.9 0x12 M. .reactiiin mil 6-11
Lil! 0:0. 1..\ reaction coil 1 7-11
1.11 >11 tuning coil VcryiiIW
1.12 111.11: Liming roil .. 150
1.1:i 1.11 tunimx roi1 17-1;
11.1 1111 1.1. trans. 111;
11': 2111111111111. {1 119
his épiizikr-r speech mil 1 :10
'11 Oiltpili inn 1" . 353.1:
1.17.413 unvnnands 1 .-
s11. 11'i 1
<1; .1111.- $111 Tilis.1{|lll"li A .,