How to Make 12v Power Supply

In this project, we'll teach you making a simple 12v power supply circuit. DC-12V is the standard voltage, or nominal voltage for the North American side of AC electrical power. It is termed as positive potential in DC and negative potential in AC. As per IEEE convention, the voltage level 0V represents ground potential.

DC -12V is a voltage and current supply for gadgets. It is used to provide power to the devices that use DC -12V such as digital cameras, laptops, mp3 players and other battery operated devices.

The article is being published in collaboration with JLCPCB. They supply high quality PCBs at a very reasonable price. They also can provide SMT circuit assembly.

The final circuit diagram and design can be seen above. We also thank to our sponsor JLCPCB (https://jlcpcb.com/RTA) for sponsoring us PCB for this project.

 Thanks To JLCPCB.

$2 for 1-4 Layer PCBs.

Get SMT Coupons - https://jlcpcb.com/RTA

To make this power supply circuit, we might need some electronics component.

Those component lists have to been given below.

Component List:

1. PCB – made by JLCPCB

2. Rectifier Diode - 1N 5399

3. LED – 5mm

5. Resistor – 1 KΩ

6. Capacitor - 2200µf/ 35v

7. Transformer - 12.0.12 v

8. DC - 12v

The Design of power supply circuit along with the PCB layout can be seen above. If you don't want to make power supply circuit, then you can use any 12 battery.

The schematic of power supply circuit along with the PCB layout can be seen above.

• 12V regulated power supplies
• 12V unregulated power supplies
• In addition, the 12V regulated power supply has three subgroups:
• Switching regulator AC to DC
• Linear regulator AC to DC
• Switching regulator DC to DC

We make bridge power supply circuit. To make this bridge power connection, we need 4 pieces rectifier diode.

We know that, there are two polarity terminal of a diode. To make this bridge connection, we connect two diode negative terminal and connect due two diode positive terminal with the circuit.

Then we connect, two set diode positive leg with another diode negative leg and connect other terminal with the circuit. It’s a complete bridge connection.

To filter voltage, we need to use a capacitor with the circuit. We are using 2200µf/ 35v capacitor with this circuit. We connect capacitor negative leg with diode negative leg and connect capacitor positive leg with diode positive leg.

For indicator, now we connect resistor and LED with the circuit. We are using 1k resistor to make this circuit. We connect resistor with capacitor positive leg and connect LED positive leg with resistor. Then connect LED negative leg with positive & negative leg of diode.

For power source we are using 12v transformer. If we want to make 15v power supply, for that we need to connect 15v transformer. Now we connect transformer secondary section with the circuit. We connect secondary section cable with diode positive and negative leg.

Now we connect dc-12v LED light or motor or any kind of electronic gadget device with the circuit. We connect device positive cable with capacitor positive cable and connect capacitor negative cable with device negative cable.

Our device is now completely ready for use. We use DC-12v led light to test the project circuit.

Neat and perfect soldering is an important part for all kind of PCBs. Since soldering, you should remember that, there should not be any kind of short circuit connection. After soldering all leg, we cut-off the extra leg of all electronics component.

We also can use liquid PCB cleaner to clean the PCB board.

Our power supply circuit is now ready for use. Now we just need to connect AC cable with AC line and to operate the amazing project circuit.

Again thanks to JLCPCB for best quality PCBs.

If you complete design of your PCBs, then it is time to order PCBs. To order best quality PCBs, just visit JLCPCB and click on the “QUOTE NOW” button.

Since 2006,  JLCPCB continuously driven to become more efficient and to reduce costs. They promise to offer customers the most economic PCBs forever. JLCPCB makes cheapest but top quality PCBs possibly because of scale effect, extremely high production efficiency and less manpower cost.

You can order minimum 5 pieces PCBs for only $2 costs.

To order PCBs, make your Gerber file. Then drag and drop the Gerber file on the following box.

Click on “Gerber Viewer” button you can check the PCBs design. Make sure everything is good, then choose color, quantity and order your PCBs at very reasonable prices.

If you are a new user, then you can order 10 pieces PCBs, costing only $2. To place your order click on “Save to Cart”  button. Confirm your shipping address and shipping method.

To order your SMT PCBs, visit JLCPCB.

1.     Drag and drop SMT PCBs file on site.

2.     Choose your PCBs color and quantity.

3.     To free SMT assembly for your PCB click on “SMT Assembly” button and then confirm.

4.     Add your BOM file and CPL file.

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7.     Pay your payment

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JLCPCB supported all shipping method can be seen below.

Estimated Delivery Time -

• DHL International Express 3-5 business days
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• S.F Express (Standard) 5-8 business days
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• 
  

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To confirm your order, pay your payment. Then accept PayPal, Credit/Debit Card, and Prepaid Wire Transfer. To manufacture your PCBs, it’ll take about 2 days. DHL will be fastest shipping method to arrive your ordered PCBs at your location.

All PCBs were well packed and quality was really good.

Thanks to JLCPCB for best quality PCBs.