12v 3a Regulated Power Supply Circuit Diagram

Here this circuit diagram is for 12v regulated fixed voltage dc power supply this power supply circuit diagram is ideal for an average current requirement of 1amp.

12v 3a regulated power supply circuit diagram. This below circuit is suitable for you with 5 important reasons. 12v and 5v output many ideas of 12v and 5v dual power supply circuit diagram at 3a max. 1 5v 3v adapter usb to 1 5v or 3v converter circuit small uninterruptible ups. But if you need to use a 3a adjustable voltage regulator.

This circuit can be very useful on the places where you want high current like 3a. Many years ago i built a first variable power supply using lm317. For most of our sensors and motors we use voltage levels like 3 3v 5v or 12v. This circuit is based on ic lm7812 it is a 3 terminal ve voltage regulator ic.

First it is a high quality power supply. Now i have still used it. A lot of 6v supply. Second the output current up to 3a.

1 5v 3v 4 5v 6v 9v at 1 5a selector voltage regulator. First power supply circuit is built with bd139 one zener diode and a few passive components. 12v 1a linear regulator using transistor and zener diode. But motors like servo motors or pmdc motors which run on 12v or more require a high current.

Each of the schematic is very simple to construct and will function without problems if you respect the maximum power supply ratings. 24v 2a power supply circuit. It has short circuit protection thermal overload protection. Here are 4 simple 12v power supply circuits with output voltages around 12v.

12v dc power supply schematics. So we are building here the regulated power supply of 3a current with the variable voltage between 0 to 24v.