Improved Adjustable Voltage Power Supply

Step 2:

If you finish working of that,build the circuit now.

Here's the diagram.

Remember that you will need two PCB to build the 2 supplying circuits .

Comments

[vikaskumardabas]

we can use 1k variable resistor instead 50k.
I think it will work as tested

[vikaskumardabas]

we can use 1k variable resistor instead 50k.
I think it will work as tested

[vikaskumardabas]

we can use 1k variable resistor instead 50k.
I think it will work as tested

[vikaskumardabas]

we can use 1k variable resistor instead 50k.
I think it will work as tested

[srain1]

Thank You and sorry for that thing.

First,make an voltage rectifier with the use of 1N4001 diodes.
Connect the rectifier to the transformer,after that connect the other side of the rectifier to LM7812 regulator before attaching the capacitors to the regulator.

Lastly connect the potentiometer.Attach the 470ohm resistor with the LED to the center side of potentiometer,the center side of potentiometer will serve as final output of 12V supply.Connect #2 of the regulator to the left side of potentiometer,and connect the right side of potentiometer to the negative output of rectifier.also attach the negative terminals of all capacitors to the negative output of rectifier.
The 100nf cap does not have polarity,so you can interchange when installing.

[SHIFT!]

Very interesting concept, but perhaps you could briefly mention how to read circuit diagrams? Personally, I've never been that good at them...