How to Make a 14V Power Supply?

A 14V power supply can be made by using a 12V power source and two 4.7kΩ resistors. The resistors are placed in series with the power source, and the voltage drop across each resistor is used to create the desired output voltage.

  • Obtain a 14V power supply
  • This can be done by either buying one from a store or online, or by making your own using a AC-to-DC power converter
  • Connect the positive (red) lead of the power supply to the positive terminal of your load, and connect the negative (black) lead of the power supply to the negative terminal of your load
  • Turn on the power switch on your 14V power supply, and verify that it is outputting DC voltage by checking the voltmeter readings
  • If everything is working properly, your load should now be powered by the 14V DC voltage source

How to Make a 12V Power Supply

When it comes to powering electronic devices, a 12V power supply is a common and convenient option. But what if you don’t have one on hand? Making your own is actually quite easy, as long as you have the right materials.

Here’s what you’ll need: – A DC power source (like a 9V battery) – An AC to DC power converter (also called a rectifier)

– A voltage regulator (optional) – Wires and connectors First, connect the positive terminal of your DC power source to the positive terminal of the rectifier.

Then, connect the negative terminal of the DC power source to the negative terminal of the rectifier. The rectifier will convert AC current into DC current, which is what we need to power our devices. If you’re using a voltage regulator, connect it between the rectifier and your device.

This will help regulate the voltage so that it doesn’t fluctuate and damage your device. Finally, use wires and connectors to hook up your device to either the rectifier or voltage regulator (depending on which one you’re using). And that’s it!

You now have a homemade 12V power supply that can be used to power all sorts of electronic devices.


How to Increase 12V to 14V?

Assuming you would like to know how to increase the voltage from 12V to 14V: There are a few ways that you can increase the voltage from 12V to 14V. One way is by using a DC power supply.

You can also use a AC power supply and rectify it using diodes. If you have an old computer power supply, you can also use that. Just make sure to set the correct voltage before connecting it.

How Do You Make a V Power Supply?

Assuming you would like a detailed tutorial on how to make a V power supply: You will need: 1) A DC Power Supply.

This can be either an AC-to-DC adapter (wall wart) or a dedicated power supply that converts AC line voltage into DC. Look for one that provides 12V DC and at least 1A of current. You may use a higher voltage if you wish, but check the maximum rating of your LM317 regulator (explained below).

If using an AC-to-DC adapter, make sure it provides regulated DC; some inexpensive units do not and their output voltages can vary greatly with load and line conditions, making them unsuitable for this project. 2) An LM317 three-terminal adjustable voltage regulator IC. This popular little device is capable of supplying up to 1.5A over an output voltage range of 1.25V to 37V, which covers our needs nicely.

It’s also very inexpensive; you should be able to find one at your local electronics store or online for less than a dollar. 3) A handful of resistors: two 2 ohm resistors (R1, R2 in the schematic), one 10K resistor (R3), and one 100K resistor (R4). You may have these on hand already, or they can be purchased cheaply at any electronics store as well.

Carbon film or metal film types will work just fine. Avoid using wirewound resistors as they tend to produce too much heat in this application and could damage the LM317 regulator IC. 4) One LED indicator lamp, such as a 5mm green LED (D1 in the schematic).

This is optional but recommended, as it will give you a visual indication that your power supply is working properly when finished. Any color LED will do; just make sure it has a suitably high forward voltage drop for the particular transistor you’re using (explained below). Red LEDs are typically around 2V while green ones are closer to 3V, so pick accordingly.

5) One NPN bipolar junction transistor such as a 2N3904 or BC548B (Q1 in the schematic). The exact type isn’t critical; almost any small signal NPN transistor should work here provided its gain is high enough (>100 works well). Check the packaging to be sure; most small signal transistors will have their gain listed right on them somewhere.

How to Make 12V Power Supply at Home?

A 12V power supply can be easily made at home with a few simple components. The most important component in this circuit is the transformer. Transformer is used to step down the 230V AC mains voltage to 12V AC.

This transformed AC voltage is then rectified by using a full wave rectifier which converts it into DC voltage. This DC voltage is then filtered using a capacitor to remove any ripples and finally it is regulated to 12V using a zener diode. The following components are required for this project:

1) Transformer – 230VAC to 12VAC, 1Amp rating 2) 4 IN4007 diodes 3) 100uF/35v capacitor

4) 1N4733 zener diode (12v, 1watt rating) 5) Heat sink for zener diode The first step is to wind the primary of transformer with 18-20 turns of enameled copper wire (AWG 22).

Then connect one end of the primary winding to one live terminal of mains socket and other end to neutral terminal as shown in figure below. It is very important to get the polarity right, otherwise the transformer will not work properly. After that wind the secondary of transformer with 10-12 turns of enameled copper wire (AWG 22).

Now connect all the diodes (IN4007), capacitor and zener diode as shown in circuit diagram. Make sure that you connect the cathode (striped end) of diodes towards resistor R1 and anode towards capacitor C1 & C2 side as shown in diagram. Also note that electrolytic capacitors must be connected in correct polarity, otherwise they will get damaged.

Zener diode should be mounted on heat sink so that it does not overheat during operation. Finally connect a male DC jack at output point as shown in circuit diagram and your homemade 12v power supply unit is ready for use.

How to Make a Simple Power Supply?

A power supply is an important part of any electronics project. It provides the necessary power to run your circuit and components. There are many different types of power supplies, but the most common is the linear power supply.

Linear power supplies use a transformer to convert AC current into DC current. This type of power supply is simple to build and can be used for a wide variety of projects. The first step in building a linear power supply is to find a suitable transformer.

The transformer must have two windings, one primary and one secondary. The primary winding should be connected to the AC input voltage, and the secondary winding should be connected to the rectifier diodes. The number of turns on the secondary winding will determine the output voltage of the power supply.

For example, if you are using a 12 volt AC input voltage, and you want a 5 volt DC output voltage, you would need a 2:1 ratio transformer (2 turns on the secondary for every 1 turn on the primary). Next, connect the rectifier diodes to the secondary winding of the transformer. The cathode (short lead) of each diode should be connected to one end of each winding, and the anode (long lead) should be connected to ground (the other end of each winding).

Make sure that all of the diodes are pointing in the same direction! Now it’s time to connect your load (the thing that you’re powering with this PSU) across the DC output terminals. That’s it!

Your basic linear PSU is now complete!

How To Make A 14V, 15A Car Battery Charger, From ATX PowerSupply (Part-1)


In order to make a 14V power supply, you will need: 1) a DC (direct current) power source, 2) two 4-ohm resistors,

3) an 8-ohm resistor, and 4) a capacitor. The DC power source can be either batteries or an AC (alternating current) to DC adapter.

To connect the resistors and capacitor, use alligator clips or solder the connections. Finally, clip the positive lead of the DC power source to one end of the 8-ohm resistor and the other end of this resistor to one end of each 4-ohm resistor. The other ends of the 4-ohm resistors should be connected to the positive and negative leads of your capacitor.

That’s it! Your 14V power supply is now complete.


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