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Dual 704 - Circuit Diagram; Transistor Connections; Voltage Measurement Points

Dual 704
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Dual
Fig.
1
EC
Ec
111
Hz
(33
1/3
Upm)
>7
mV
ss
R2
T
1
p
4,7
k
T1
Cl
47p
R
1
220
k
110/130V
220/240
V
50
—60
Hz.
R3
100
k
f
C4
0,47
µ
R5
470
R4
18k
C6
47
n
T2
II
89
22
k
R
11
22
k
D
1/1
N
4148
D
2/1
N
4148
T3
BC
172
B
BC
172
B
C7
47
n
R6
2k
88
22
k
T4
BC
17213
R
12
22
k
R
10
18k
R
13
100k
C8
4,7
n
R
14
10k
124V±5
R
45
5k
T5
BC
172
B
R
15
100
k
1
1
C9
47
n
R
16
II
6,2
k
T
0,125
A
1
C
52
0/
47
n
110V
..»
220
V
Gl.
1
IC
51
68
n
D
51
BY
183
300
851
22
k
Transistoren
von
der
Anschlußseite
gesehen
Transistors
as
seen
from
the
connecting
side
Transistors
vus
du
cötä
des
connexions
BC
172
B
BC
252
B
BC
338
BD
135
[3,8V
_C19
C20
20n
20n
I
B
I
C
I
E
C18
ZD
361-1000
p
D7
Spannungen
gemessen
mi
Voltages
measured
with
n
Tensions
mesuräes
avec
jr
Masse
der
Elektronik
ist
Bezugspunkt
für
Messun-
The
gr
,
gen.
Meßgeräte
erdfrei
anschließen,
da
Tonabneh-
for
ma
mermasse
an
+
28
V
liegt.
ment
t
connec
1,2
3
4,
5,
6
8
52
51
1,2
3
4
6,7
9,
10,
11
12
13
14,45
15
16
8
9
52
51
19
20
18
3

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