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R33
+V
D1 75
C10
R12 1N4148 R20 R19 C3 C11 4700u
274 68k 10n 0.1u
100
D2

Q2 1N4148 R13
Q7
MPSA56
U? MPS8599 1k
LM7812CT
3 OUT IN 1
Q8
C? G MPSA56 Q? Q? Q? Q?
N
R11 D
1500u 10k
2
MJ11016 MJ11016 MJ11016 MJ11016
RT1 R?
511
R? C8 5k@25c R23 R24 R25 R26 L1 2.5uH
R? 4.99k 0.1u 0.27 0.27 0.27 0.27
10M Q3 Q4
R9 C? R22 R31
MPS8599
C? 33.2k 5u MPS8599 75k 4.7
Q? R14 R27 R28 R29 R30
2N4341 R
5u R? 0.27 0.27 0.27 0.27 R32
C9 idle 200 4.7
R? MPS8599 30p curr.
100k Q5 MPS8599
Q6 C7 C14
R? C5 Q? Q? Q? Q?
10k C6
47n
10n
100u 0.47u
Q9 MJ11015 MJ11015 MJ11015 MJ11015
R10 MPSA06
49.9k D3

1N4148
Q10
R11 MPSA06
D4
100k
dc out offset 1N4148
R15 R16 R17
33.2k R18
1.5k 681k
274k R21 C4 C13 C12
10n 0.1u 4700u
100
R34
-V
C? 75
10n
D? MDA3502
T? regolare bias x 1 V di caduta
R? su queste resistenze (=10A) F? per il dr3b non VHC togliere 2 coppie di finali
RV? +V e togliere due resistenza da 0.4 Ohm per ogni ramo
VARISTOR il bias si regola a 1.5v di caduta (7.5 A)
0.1 25A i condensatori di filtro da 30 a 20 mF
C? (4//0.4) C?
C? 30mF 30mF C? C? C?
10n 4.7u 0.47u 10n
C?
10n
Federico Paoletti
C? C? C? C? C? C?
10n 30mF 30mF 4.7u 0.47u 10n Title
R? F? Classe' DR3 Very High Current (VHC)
-V Size Document Number REV
0.1 25A B dr3_vhc.sch
(4//0.4)
Date: February 26, 2003 Sheet of