Dasar - Dasar Elektronika

POWER SUPPLAY 13,8 Volt

Part list for 12 Amp BDX33-based power supply:

• 2 x 15 volt 6+ amps
• 2 times two MR750 (MR7510) diodes (MR750 = 6 Ampere diode) or 2 times 3 1N5401 (1N5408) diodes.
• F1 = 1 Amp
• F2 = 15 amp
• R1 2k2 1 Watt
• R2 10k
• R3 1k 0.5 watt
• R4,R5,R6,R7 0.1 ohm 10 watt
• R8 4.7
• R9 6k8
• C1 two times 4700uF/35v
• C2 330uF/35v
• C0',C3,C4,C6,C10 100nF
• C7 330uF/25v
• C8 47nF
• C9 47uF/25v
• D1 1N5401
• D2 LED
• D3, D4, D5 1N4001
• IC1 78L15
• relay 12 volt 2x5 amp switching
• 3 darlington transistors: T0,T1,T2 = BDX-33 NPN TO-220 transistor
• Zd 8 or 9 volt, 5 watt
• P1 2k trimmer

If using a bridge rectifier (like in schematic 2) you do not need 2 x 15 volts 6 amps, but 1 x 15 volt 10+ Amps

Part list for 20 Amp BDX33-based power supply:

• 2 x 15 volt 12+ amps
• 2 times 3 MR750 (MR7510) diodes (MR750 = 6 Ampere diode) or 2 times 5 1N5401 (1N5408) diodes.
• F1 = 2 Amp
• F2 = 25 amp
• R1 2k2 1 Watt
• R2 10k
• R3 1k 0.5 watt
• R4,R5,R6,R7 0.1 ohm 10 watt
• R8 4.7
• R9 6k8
• C1 22000uF/35v
• C2 330uF/35v
• C0',C3,C4,C6,C10 100nF
• C7 330uF/25v
• C8 47nF
• C9 47uF/25v
• D1 1N5401
• D2 LED
• D3, D4, D5 1N4001
• IC1 7815
• relay 12 volt 10 amp switching
• Four darlington transistors: T0,T1,T2,T3 = BDX-33 NPN TO-220 transistor
• Zd 8 or 9 volt, 5 watt
• P1 2k trimmer

If using a bridge rectifier (like in schematic 2) you do not need 2 x 15 volts 12 amps, but 1 x 15 volt 20 Amps

Sumber : http://elektronika-pemula.blogspot.com/