Ferrograph F 307 Schematic

Page 1

FERROGRAPH F307 STEREO AMPLIFIER

BC1OB

DRAIN 403 154
2 N5461 7 5 sw 700
40350 40233 EXCEPT WHERE STATED OTHERWISE, RESISTOR
SOURCE GATE 40352 BC183LB
©© (9 © 3:214 AND CAPACITOR VALUES ARE GIVEN IN OHMS
. AND MICROFARADS. VALUES ARE SAME FOR O-O P700
F, E.T. BOTH CHANNELS 5K7
. 00
_- -____,, O-Q 0
PRE-AMPLIFIE I I I
- R 1-, TONE & GAIN CONTROLS-I 1 7
LEFT 100 o - 7 5W WW
R 250V ALL P. BUTTONS
t W I a. I SHOWN m VOLTAGES ARE APPRongu
LP
CHANNEL 00 f 14109075A PUSH BUTTON SWITCHES / .OUT. 5'me a. ARE MEASURED WITH
5,2373: B. SLIDE SWITcHEs M No SIGNAL INPUT a.
R401 240V MAINS SUPPLY
10k
1
' ' l A
'4 241040. N g4 r 1
_ rs 701 ® 3 g ;
0-75A N " I"
- I? 2 3
° r~ [8
V) O
OUTPUT * 2 ° 2
' I &
I III-
1p ' ' ' "I I I '000 B
I I c700 40
3 . MODE SWITCHING I , R513 |-_" Lm _
c R200 C503 8 2k . '
R107 R108 '- 27" J 3,5 SPEAKER
E a»
R3190:J ' I TAR;- TAPE T 100 M 5
C105 REPLAY - H 40v MR500 C500 IIW
I 5K 705 «n- MI ® m , R514 R509 375 250
-22 ' L 700 I 250k LOG SOURCEI o €505 c504 IN3754 E705
MAG. .6) i ' +- - I § 3 1000pF
,,W,_ WOW I g _ A. 160v
CER. R1" C106 54 W* 1F * I 2 g Js-C: 3 PHONES
100k '1 VT102 l C300 I c301 t I 3 JK700
-I D I- "III ' 2 3 ~ 5 T v.
I RADIO._©_I-_' _. ,__I 10 KHz I 2 :8 g
I "I 704: | 3 _ up
I S H sw300 ;
I Aux. 'I I I H I - I m
I sw701 g -:7 I .n - o-
I '5 ' MR100 II] I j ,2 I on
I -- o 200 SW20 10m: I 1
I A C108 5 .5 .1- 7KH2 I n
| . > 5 . .Fcaoz c303 _ cr-
| I ,8. 3 "81215 R116 64" 093: 530° H I g R503 R131: ZN "l
k .
I I 3' ;,__ I I . I E R410 R411 27° ON I
I L...- I ' J E- m, I z " I R512 10* I .
I . . r--~ - ----- . :5 . . .
l I . Fl t _ ._ & 4; R504 2-2 I I I
I ' LTER I________I I L M.AA ' ,I . r _ Pd
RIGHT ,I at 4vvv - I: v a I a?
I I R118 I I 600 4 c001 602 1 I
CHANN . . ,L LC
| H I gang R119 R121 _. . Bs RV711 - j I 50 64v 250 V 250 POWER I l
I 'I 5 NW I 60° R001 64v SUPPLY I I
I R120 I R413 MA MA'
sw702 I R412 2,2k I Z-Zk I | Y
I- _ | c110 R122 9-- , a c411 R414 l - - . - I l S
- - +-I : c: . - I - - I
I . I I, R415 c410 x
I . R417 : VT402 T I 1'
I v1103 vr104 I ° TR I ' I
C111 EBLE & I . R .
_|_I Rv712 c412 R419 c413 _c414 I - - VT 500 16:3 I
I
. ~_ . v
I . 4
I I - - ~ - .
. I l R605 .
R123 R124 - - - ._, I I 270 I
?- .L ' - I
l_._l :3 , ' R201 JI : |
I R125 R126 ; ISM II R716 |
MR
IR127 -
I c112 c113 up; (I) l I
C114 1' ll . REPLA " "" l |
I 4} , . 511705 I I J I
SK704 l 0 R420 SK702 l
I = RIGHT I
IIIAG. I I E ' E SPEAKERI
U U
. 32- I
can. C I I c R131 L ; v==l R421 5: g
| iR137 fit -I c304 3 u |
. .J
RADIO I l 2 2.; g v1403 I
W M.R - v I; 0 l I
>
AUX. I: -
r©___.I I [I [I . In . on I
c116 R132 . :J -_._.I E __._. sw704
- I sw200 5 5" I
0
ms - °° :04
f I § 0N
° 3 ' 3': R423 -
' M L :1
I. - -r -I g --.-
- - _ fl r I
- .4 FILTER .. . g- _ _ R504

Circuit diagram of Ferrograph Integrated Stereo Amplifier F307