Tsukure Mad Labs Variable 1.5A DC Voltage Supply

Whenever we need a constant and specific value of voltage without fluctuation we use voltage regulator IC. They provide a fixed regulated power supply. We have 78XX (7805, 7806, 7812 etc) series voltage regulators for positive power supply and 79XX for negative power supply. But what if need to vary the power supply voltage, so here we have Variable Voltage Regulator IC LM317. In this tutorial we will show you how to get the variable regulated Voltage from the LM317 IC. With a small circuitry attached with LM317 we can get variable voltage up to 37v with 1.5A max current. The output voltage is varied by varying the resistor connected to LM317’s adjustable pin.

Other Uses:

Lab Power Supply

Let's Get Started!

Below you will find a list of bits to gather before hand, followed by a detailed schematic. Using a breadboard lay out the components and connect them together as shown. Alternatively you can purchase this module from our shop and simply solder the components in the places indicated on the quality assured printed circuit boards provided.


What You Need...


1 104 (100nF / 0.1uF) Capacitor (Ceramic)
2 1uF Capacitor (Polarized)
1 Banana Connector (Black) Connector (Female)
1 Banana Connector (Red) Connector (Female)
1 PCB Mount 2-Pin Screw Terminal Block Connector (Other)
1 Tsukure Mad Labs - Variable 1.5A DC Supply PCB
1 24V 2A DC Power Supply
1 240R
[ Red, Yellow, Black, Black ]
Resistor (0.25 Watt)
1 10K Resistor (Potentiometer / Variable)
1 LM317 Voltage Regulator
1 LM7805 Voltage Regulator

NB: Any resistor colour codes specified relate to 5 band resistor codes, the 5th band has not been shown intentionally. The 5th band indicates the resistor tolerence, we use only the highest tolerence resistors in our products.

Take a Closer Look!


Let's Get Building!

We to build, so let's get to it! Gather your components as specified in the components list above, or simply order one of our project packs and tip the contents out onto your table or desk.

Solder station warmed up! Snips at the ready! Here we go!


Step 1) Getting Started

Before we begin placing components and soldering we should first place your components in a small tub so that they don't roll off your table or get lost.

Lay the PCB out infront of you and take a close look at all the components we will be using.

Furher explanations and detailed specifications of all these components can be found in our Wiki.


Sharing is Caring!

If you like this project, or maybe, know someone else that might, why not click the buttons below to share the experience!


Get Involved!

We are building an international community of engineers, programmers, builders, makers, nerds and geeks, join in below. Ask questions about this module or perhaps share your projects and show others how you have used this information to do something kool!


Tsukure Mad Labs STEM Categories





Tsukure TV

We will be launching the Tsukure TV YouTube Channel very soon! Subscribe now so that you don't miss out on the BIG LAUNCH!


CLICK IMAGES TO ENLARGE!

3D Model

Click on the model below and move your mouse to rotate or if you're feeling a little adventurous, why not click the "ZOOM" link and take a closer look!

ZOOM 3D!
Download
[ OBJ & MTL ]

STEM Ranges



Additional Resources


GitHub

Our team of engineers and coders have been busy building our own resources to allow us to improve our workflow. You too can have these resources at your disposal.

Go!

Useful Links