A few months ago, in the article Transformerless PSU, is it worth it? two ways to convert AC mains into usable DC voltage were analyzed in terms of cost, space and performance.
These two types were the traditional step-down transformer approach and a transformerless design that uses the property of reactance of the capacitor to create a voltage divider and effectively step-down the voltage.
In this article, we will analyze a third way to convert AC mains into DC voltage to power small electronics. Continue Reading “Transformerless PSU, round 2”
So you have an idea for a product?
That’s great and I don’t want to hear about it. Once someone knows that I manage a product design company they automatically want to talk about their idea if they have one of course. Continue Reading “Do you have an Electronics Product Idea?”
This post was originally published on Predictable Designs, the original article can be found here
If you are designing an electronic product, chances are that it will have a microcontroller (MCU) embedded into it.
In order to control, process, easily change parameters of the design on demand and keep the design tidy and relatively low complexity, it is unpractical to approach a solution using purely discrete analogue and digital components. For this reason, a natural choice is the use of a microcontroller. A microcontroller is basically a computer shrunk to a chip. It contains a CPU, memory, I/O pins and peripherals, all in a single package. Continue Reading “Beginners Guide: First Design with the dsPIC33E MCU”
Have you heard of a current source before? In electronics, when you hear the word source, it means that part is “giving” or “providing” something, in this case, a current. The opposite of sourcing is sinking, this means that part is “taking” or “demanding” something. Continue Reading “Current Source to Measure DC Resistance of a Wire”
When it comes to the design of a power supply that needs to convert AC mains voltage into a fixed DC voltage, it is the norm to think that a transformer is required to achieve that design goal. In this article, a different alternative will be presented, and more importantly, it will be simulated and compared to the standard transformer solution in terms of cost, size and performance. Continue Reading “Transformerless PSU, is it worth it?”
One of the most fun parts of creating a real electronic circuit is (in my opinion) designing the Printed Circuit Board or PCB layout.
This is the point where our abstract circuit schematic made by symbols and lines, becomes a real circuit that can be manufactured, assembled and used. Continue Reading “PCB Layout Design Good Practices”
Energy consumption is an important parameter that not only concerns sustainability. It is true that by optimizing the use of energy on the device, less energy will be required to perform its function, therefore more efficient, but also by performing this optimization you will have an overall better product. Continue Reading “Optimize the Energy Consumption of your Electronic Device”
This post was originally published on the WindAid blog. The article can be found here
Back in the summer of 2014, I had one of the best experiences of my life (sounds cheesy and the start of a teenage girl movie doesn’t it?). I was just finishing university and graduating with an electronics engineering bachelor degree at the University of Plymouth and before getting hooked into a 9-5 job I was looking to have an experience where I could combine three different factors Continue Reading “WindAid is also Electronics”
Wind Turbines with Twitter accounts? Unconventional perhaps, but it’s a zero service cost option I was able to implement that allows WindAid Institute, a Peruvian Non Governmental Organisation (NGO) to receive notifications from their wind turbine systems in rural Peru. The open source remote monitor project (or ReMona) was born out of a need to:
- Receiving system alerts, such as battery level being critically low.
- Wanting Live data to track system usage and turbine performance anywhere in the world.
Continue Reading “Wind turbines with Twitter accounts”
Lately, there has been a rise in dashcams sold worldwide to protect the driver’s insurance claims. Most of the time, these have been sufficient. I recently bought my first car and had to drive about an hour on the motorway to my first job. Being a new driver, I had my car fitted with a black box (telematics box) to monitor my driving. A few years later, I bought my second car, but I didn’t have a telematics box installed. Given the driving styles I have seen from various individuals on my commute to and from work, I felt a dashcam alone would not be sufficient, and I really wanted to have something that could monitor my driving in the event of some idiot thought they were on the set of the next Fast & Furious. So I made my own! Continue Reading “DIY Telematics Box”