24V, 12V and 0V Power Supply System Using Kicad EDA
I have done a design of the 24v, 12v and 0v power supply system using the KiCAD EDA software,
As a PCB designer, I have come up with a 24v , 12v and 0v power supply system for my household use. The power supply is capable of converting 240 VAC to 24 VAC using the 237-1983-ND transformer then rectify the 24 VAC to 24 VDC, then the 24 VDC is regulated using the LM317BD2TR4G. To get the 12VDC we use the L7812 IC . The 0v is obtained from the ground.
Components;
R1: 15 ohms 5W
R2: 150Ω
R3: 470Ω
R4: 270Ω
R5: 15K
R6: 2.2K 2W
C1: 6800uF 50V [Electrolytic ]
C3: 220uF 35V [Electrolytic ]
C2,C4: 0.01uF 100V Ceramic
BD1: 6A 100V Bridge diode
D1: 1N4007 Diode
LED1: Red LED
Q1: TIP3055, 15A 60V NPN transistor
Q2: TIP32, 4A, 40V PNP transistor
VR1: 10K Pot potentiometer
T1: 230V AC primary to 24V,3A secondary transformer
Components;
R1: 15 ohms 5W
R2: 150Ω
R3: 470Ω
R4: 270Ω
R5: 15K
R6: 2.2K 2W
C1: 6800uF 50V [Electrolytic ]
C3: 220uF 35V [Electrolytic ]
C2,C4: 0.01uF 100V Ceramic
BD1: 6A 100V Bridge diode
D1: 1N4007 Diode
LED1: Red LED
Q1: TIP3055, 15A 60V NPN transistor
Q2: TIP32, 4A, 40V PNP transistor
VR1: 10K Pot potentiometer
T1: 230V AC primary to 24V,3A secondary transformer
Discussie (1 opmerking(en))
Pjotr1010 3 jaar geleden
I think there is a wire too much!
Now the 24 V output and the 12 V output are connected!
How much currect do you want out of your power supply? I do not see any heatsinks anywhere.
The unregulated voltage may become as high as 24 * 1.4 = 33 Volt. With 3 A delivered at 24 V the TIP3055 must get rid of 3 A * 9,6 V = 28,8 Watt! That is as much as a medium soldering iron.
The L7812, fed with 24V can deliver 1 A, but then must get rid of 12 Watt!
Hopefully you did not yet get smoke signals from your design.
Success anyway!
Pjotr1010.
Simon Munyua Mugo 3 jaar geleden