Uploaded by syupermarsher

High-End preamp with ECC88 (Schematic-1)

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3k3
2W
100nF
400V
47mF
350V
47mF
350V
2k2
1W
IN-L
820W
2W
2k7
1W
Vta, Vtb=1/2ECC88
1
100k
log
220W
Vta
2
P1
6
Vtb
7
470nF
63V
4k7
3
Out-L
3m3
47W
8
470k
120W
680mF
35V
1N4007
250V
10k5
3W
470k
+220Vdc
MJ13002
TR1
R5
10k
315mA
200Vac
100mA
230V
50Hz
G1=400V/1A
~
15Vac
1A
R4
82k
47W
1W
C2
47mF
350V
ZD1
3V3
R1
10W
P1
100k
BF459
C4
47mF
350V
C3
47mF
350V
100nF
400V
C1
270k
T2
R2
~
C7
2,2mF
350V R6
C6
1nF
G1
20VA
250V/3A
LD1
R3
100W
1W
+B
T1
C5
100mF
200V
Zd2
BZX24
Zd3
BZX180
R7
270k
+12,6V
G2=80V/2A
R10
~
0W47
5W
D1
1
G2
~
C9
4700mF
25V
C10 D2
100nF
D3
IC1
7812
2
C12
C11
2200mF
25V
4W 7
5W
A
R9
47k
1W
GND
R11
R11
3
R8
220k
1W
C8
100nF
400V
C14
C13
100mF
100nF
SW-1
100nF
F1
4
Vta
Vtb
5
4
5
D1, D2, D3=1N4001
GNDg
Schematic-1 (with power supply)
100W
1W
R12
100W
1W
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