LM317 is the most used and easily available adjustable voltage regulator. Here I've designed a simple PCB for the regulator with surrounding diodes, capacitors, resistors, etc. In this board, the […]
How to repair mobile charger circuits
The above image shows the inside of a typical mobile charger. These chargers can burn anytime and then they need to be replaced or repaired. This tutorial is about how […]
Step by Step: Make an Inverter's power stage (MOSFET)
Here I show how to make the Power stage of an homemade inverter. I'm using the following, Old UPS transformer 2x Alluminium Heatsink 2x N-MOSFET (IRF540N, P55NF06, B150NF55 etc) Screws, […]
Convert square wave Inverters to sine wave Inverter
There's pretty easy to make square wave inverter circuit in the internet. But to run most load like fan, TV, etc you need to have a sine wave inverter. Making […]
DIY LED driver for 5Watt LEDs, 12V strips from 100-240 VAC
I got many requests to provide guide to build simple 230V to 1,3,5 Watt LED driver in response to my simple led driver diagram. So, below I'm writing an article […]
Subwoofer Lowpass Filter circuit using uA741 Single Op-Amp Ic
This is the simplest DIY low pass filter for subwoofer using uA741 single op-amp ic. The circuit performs really well compared to it's price. The cut off frequency of this […]
OSSDAS rev. beta
This is current revision of the OSSDAS project. This new beta design is as follows. After few days this design will go to a board house. Now just touching it […]
Simplest Solderless Breadboard Power Supply
To make a nice breadboard power supply at the cheapest and simplest way, you need the following, An old unused (working) mobile charger. A 2x2 0.1" pitch male pin header. […]
Open Source Solar Data Acquisition System: First draft
O.S.S.D.A.S v1 stands for Open Source Solar Data Acquisition System. I have been working on this project since last few months. The picture above is the not the first prototype, […]
Simple DIY Solar Panel (Homemade)
This project isn't something that uses a solar panel and uses the produced voltage for some electrical and electronics work. But this project shows how to make a solar panel […]
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