Programmable DC Power Supply
                     Programmable DC 
Power Supply
A programmable dc power supply is a 
device used to control the output voltage of 
a dc power source. Programmable dc power 
supplies use analog or digital circuits to 
allow the user to easily vary the output 
voltage. Some devices are very simple and 
only have a potentiometer to adjust the 
output, while others require computer 
programming in order to change the output 
voltage on the fly.
This device is a great asset for any 
hobbyist or engineer looking to perform 
tests on electrical devices and circuits. 
The programmable dc power supply is 
designed to be used as a bench-top 
power supply, which can produce a wide 
range of voltage settings.
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Programmable DC Power Supply
 It can be used for testing the 
performance of electrical devices, for 
example, operating a small DC motor at 
different voltages. In addition to its wide 
voltage range, the programmable dc 
power supply offers several other 
features such as an LED display screen, 
individual voltage adjustment knobs, and 
an auto-shutdown feature.
 Programmable DC power supplies are 
used in electronics applications when some 
aspect of a circuit requires a precise DC 
voltage, such as in digital logic circuits 
where the output of a 3-state buffer or 
multilevel converter is set via a 
potentiometer; they are also used in audio 
and video equipment to produce test tones 
and to bias the operating point of analog 
circuits.
We've all been there: you need a small, 
precise amount of voltage to run an 
experiment, but you don't have the 
required power supply. What do you do? 
This can be a frustrating problem for 
students, makers and electronics 
enthusiasts, but it doesn't have to be! You 
can build your own programmable DC 
power supply using an Arduino 
microcontroller and some basic electronic 
components.
A programmable DC power supply 
provides a voltage source which can be 
adjusted at specific intervals. This allows 
the device to be used in labs for 
experimental purposes, as well as 
providing a more sustainable alternative 
to a traditional power supply.
The ubiquitous variable power supply is a 
staple of electronics hobbyists and 
technicians everywhere. The ability to 
provide a constant voltage while 
changing the current makes it incredibly 
useful for testing loads of different sizes 
and powering loads with different voltage 
requirements. But what if you could 
change the voltage AND the current in a 
single step?
Many new electronics hobbyists may 
not realize this, but modern power 
supplies actually do have that 
capability. However, most people don't 
know how to use it or even know that 
it exists. This post will cover exactly 
how it works, what it's good for, and 
why every electronics hobbyist should 
have one in their toolbox.
If you're having trouble getting your 
project to fit within a certain voltage range, 
or if you want to use a component that 
isn't compatible with the current you're 
using, you can use a programmable dc 
power supply to easily and accurately 
change the output of your power supply.