Number ONE—esquema.

Number ONE
240V
Vacuum-tube Amplifier
6BM8 Project
Main circuit 1 channel shown
B1 LIDER 1505
U1
T1
8 Ohms
SPKR
0
U2
B1
240V
6
V1
6BM8
9
4
5k
0
7
1
+ B1
3
INPUT
- Fil
5
2
8
4
+ Fil
+
C3
1nF
R2
5k6
C2
100nF
C4
70v **
GND1
220uF 300V
R6
2k2 10w
U3
-
C1
Q1*
2SC2240
+
R5
15k 2w
10uF
P1
100k 40% ***
R3
1k
VOLUME
R1
220k
**P2: Ajustar simultaneamente
os 2 canais para VR6=70v
R4
3k3
P2
4k7 40%
*Q1: Pd min= 150mw
Vcbo=120v
hfe>200
D1
***C1: Melhor não polarizado
1N4735
6v2 1w
P3: ajustar para Vfil = 6,3Vdc
BIAS ADJ.
Q2
BD201
2KBP02
+ Fil
+
D2
1000uF x 25v
C5
P3
S1
F1
1A
+
Power Supply
C6
2200uF x 16v
D3
1N4735
100
- Fil
220
1KAB60
T2
9v @ 2A
T3
9v @ 1A
R7
47 10w
D4
C7
+ GND
220uFx300v
Q3
IRF630
+ B
+ B1
240v
R8
5k1
R9
1k
D8
D7
1N4735 1N4735
R10
100k
D5
1N5380B
R11
100k
D6
1N5380B
+
260v
GND
+ B
C8
22uFx300v
High-voltage Regulator
260v
+
110
+
S2
P3
C9
220uFx300v
+ GND1
LPJ Audio
Number ONE version 2
Rev ID
4.0
Luciano Peccerini Junior
Date: 20100211
Page: 1 of 1