Vehicle Adapter for Notebook PCs
19 volts from a car battery
Materials
Gerber file
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Component list
R1,R2 = 10kOhm
R3 = 560Ohm
R4,R11,R12 = 3kOhm 3
R5,R7,R8 = 1kOhm 5
R6,R9 = 6kOhm 8
R10 = 220Ohm , 1W
R13 = 1kOhm 8
R14 = 15kOhm
R15,R17 = 680Ohm
R16 = 150Ohm , 5W
R18 = 820Ohm
Capacitors:
C1 = 5nF6
C2 = 2200µF 16V axial
C3 = 470µF 63V axial
C4,C5 = 470µF 16V radial
C6 = 10µF 16V
Semiconductors:
D1 = 1N4148
D2,D3 = MBR745
D4 = zener diode 6V8 0.4W
D5 = zener diode 12V 0.4W
D6 = LED, high efficiency
IC1 = TLC272CP
T1,T5 = BC337-40
T2 = BDX53B
T3,T4 = BD912
Miscellaneous:
F1 = fuse, 4A, time lag, with PCB mount holder
L1 = 50µH 3A suppressor coil (SFT830D, Conrad Electronics #534412)
Metal enclosure, size 119x 65x 39 mm
2 heatsinks
12V miniature fan (Conrad Electronics #532614)
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