Build your own variable lab bench power supply.
Digital lab power supply schematic.
A bench power supply is an extremely handy bit of kit to have around for electronics hobbyists but they can be expensive when purchased from the market.
Many ideas of 12v and 5v dual power supply circuit diagram at 3a max.
Using digital system for control and display enable us to conveniently operate this circuit.
The output of ic1 is connected via an rc network to the clock input of counter ic cd4017 ic2.
Simple dc regulators 12v 15v 30v.
Digital control for laboratory power supply using arduino.
In this project i will show you how i combined a ltc3780 which is a powerful 130w step up step down converter with a 12v 5a power supply to create an adjustable lab bench power supply 0 8v 29 4v 0 3a 6a.
Digital dc regulator if you are looking for 5v dc power supply for the digital.
It generates clock pulses when switch s2 is pressed.
As the presets vr1 to vr9 are connected at the collectors of transistors t2 to t10 different output resistances appear between the adjustable terminal and.
Variable power supply circuit circuit diagram.
We will be presenting the micro controller system the schematic diagram the program code for this power supply in the second part of this article.
That s why i was searching for suitable schematic to build.
The latest shown here in action was almost perfect two channels 1 2 30v 3a but there wasn t current limiting.
In this instructable i will show you how to make a variable lab bench power supply with a limited budget it is a great diy project for beginners as well as any one interested in electronics.
Variable power supply with digital control working.
1 5v 3v adapter usb to 1 5v or 3v converter circuit small uninterruptible ups.
The performance is quite good in compa.
Timer ic ne555 ic1 is wired as an astable multivibrator.
Variable power supply with digital control.
I already have several lab power supplies all of them made by myself.
When switch s2 has pressed the output of the ic1 goes high and further the outputs of ic2 goes high one after the other as a ring counter.
I had just built today this power supply using the schematic and pcb lay out and everything works fine maybe you have a bad solder or some parts are wrongly placed recheck all connections and all soldered points it should looks shiny if properly soldered.
5v power supplies digital power supplies.