Regulated power supply block diagram.
Simple regulated power supply circuit diagram.
This regulated power supply included a transformer t1 a bridge d1 d4 and the 38v dc filtering voltage regulator circuits which consists of c1 c2 r1 r2 r3 q1 and q2.
Making a fixed 12v regulator circuit.
Each of the schematic is very simple to construct and will function without problems if you respect the maximum power supply ratings.
It will keep a stable voltage when it.
5 volts low dc regulator circuits.
What is a variable power supply.
18v dc power supply using 7818.
We use the simple zener diode voltage regulator as main ideas and two transistors to increase current to the load at 1a 2a.
12v dc power supply schematics.
But it still has the same characteristics as a fixed regulated power supply.
12v bd139 power supply circuit.
Simply said it is a power supply that can adjust the output voltage or current.
In case you wanted to achieve a fixed 12v regulated power supply the same configuration could be applied for getting the required results as shown below.
Designing the power supply.
I want to base the power supply circuit around the lm7805 voltage regulator because it s an easy to find chip that is simple to use.
First power supply circuit is built with bd139 one zener diode and a few passive components.
This component will give a stable output voltage of 5v up to 1 5 a.