±40-V Linear Voltage Regulator
An Alternative Power Supply for the Fortissimo-100 Power Amplifier… and Others!

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Component list
Component List
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(Elektor kit contents listed)
Resistors
R1, R19 = 4.7 kΩ, 1%, 0.6 W
R2, R21 = 150 kΩ, 1%, 0.6 W
R3, R20 = 12 kΩ, 1%, 0.6 W
R4, R22 = 3.3 kΩ, 5%, 1 W, body size 5×12 mm max.
R5, R23 = 47 Ω, 1%, 0.6 W
R6, R7, R16, R24, R25, R34 = 1 kΩ, 1%, 0.6 W
R8, R26 = 300 Ω, 1%, 0.6 W
R9, R27 = 15 kΩ, 1%, 0.6 W
R10, R28 = 100 Ω, 1%, 0.6 W
R11, R12, R13, R29, R30, R31 = 33 Ω, 5%, 5 W, body diam. 6.4 mm max. (axial, mounted upright)
R14, R15, R32, R33 = 0.1 Ω, 10%, 5 W (body 7.8×25 mm max.)
R17, R35 = 6.8 kΩ, 1%, 0.6 W
R18, R36 = 22 kΩ, 1%, 0.6 W
P1, P2 = 500 Ω, 0.15 W, trimmer, top adjust (Piher PT10LV10-501A2020-S)
Capacitors
C1, C11 = 22 μF, 20%, 63 V, pitch 2.5 mm, diam. 6.3 mm max.
C2, C5, C12, C15 = 10 nF, 10%, 100 V, ceramic X7R , pitch 5 mm
C3, C13 = 15 nF, 5%, 100 V, PET, pitch 5 mm
C4, C14 = 47 nF, 10%, 50 V, ceramic X7R, pitch 5 mm
C6, C7, C16, C17 = 1000 μF, 20%, 50 V, pitch 5 mm, D 12.5 mm, 5000 h @ 105 °C (EEUFC1H102L, Panasonic)
C8, C9, C10, C18, C19, C20 = 100 nF, 10%, 100 V, pitch 5 mm, ceramic X7R
Semiconductors
D1, D2, D4, D5 = SD101A SB00018/D8, DO-35
D3, D6 = HTR20L120CT, TO-220
LED1, LED2 = LED, green, 5 mm (T-1¾)
T1, T2, T9 = BC546B, TO-92
T3, T7, T8 = BC556B, TO-92
T4 = MJE15035, TO-220
T5, T6 = TIP36C, TO-247
T10 = MJE15034, TO-220
T11, T12 = TIP35C, TO-247
IC1, IC2 = TL431BCLPG, TO-92
Miscellaneous
K1, K2, K3, K4, K5, K6 = Faston PCB tab, two pins, hole diam. 1.4 mm, 6.35×0.83 mm
F1, F2 = Fuse clips, 20 A, Littelfuse 01000020Z, for 5×20 mm fuse
F1, F2 = Fuse, Cartridge, fast acting, 15 A , 5×20 mm
HS1, HS2, HS2, HS4 = heatsink MC33271 (for T5/T6/T11/T12), 2.7 °C/W
4× heatsink type FK231SA220, 24 K/W (for T4/T10, two each)
10× M3 washer, plain, steel
6× M3 screw, 10 mm, pan head
6× M3 nut
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