How to make 15v 3 amp power supply
In this project we learn how to make 15v 3 amp power supply easy at home with the help of video and circuit diagram. its very easy and useful homemade project. in this project we also use LM7815 voltage regulator for regulate voltage of fix 15 volt. for making this project we need some components.
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| How to make 15v 3 amp power supply |
Components:
- 12-0-12 or 24v 3Amp Transformer
- D313 Transistor
- LM7815 Voltage Regulator
- 35v 1000uf capacitor
- 35v 220uf capacitor
- 1N5408 Diode
- 1N4007 Diode
- PCB Board
- Soldering Iron
- Soldering Wire
Now following few simple steps and make same.
- Transformer has 2 side.
15v 3 amp power supply circuit diagram - Primary side use for 220 volt power supply.
- Secondary side has 3 pin.
- Connect 1N5408 diode with 1st pin of transformer, if you use 12 volt transformer then leave 2nd pin and use 3rd pin for ground wire.
- Now connect positive side of 1000uf capacitor with 2nd side of diode.
- And negative side connect with ground wire.
- Now input wire of voltage regulator connect with 2nd side of diode,
- And now 1N4007 diode connect with ground wire of voltage regulator like diagram,
- Now output wire of voltage regulator connect with base of transistor,
- And now collector pin of transistor connect with input wire of voltage regulator,
- Now positive side of 220uf capacitor connect with emitter pin of transistor,
- And negative side of capacitor connect with ground wire,
- Finally emitter pin use for 15 volt positive output and ground wire use for negative output.
- 1st Base
- 2nd Collector
- 3rd Emitter
We learn it more batter with watching video:
Video of how to make 15v 3 ampere power supply:
Some Basic Question and Answers
Why use D313 Transistor?
D313 Transistor work on 3 ampere power so we use it for making 3amp power supply.
Why output current is less then 3 ampere?
its total problem from transformer. when we buy 3 ampere transformer in actual its 2.5 ampere or more less. because shops or company maker doing fraud. They use low quality and low power wire in transformer. So its provide us low current. wire current rating chart
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