These are the components you need for building the portable USB charger circuit.
These are all pretty standard components, so you can probably get these at your local electronics supplier if you have one.
Even though you can do a lot with just a soldering iron, getting a few extra tools might things easier.
In this articles I’ll show you what the basic soldering tools are.
My workday is coming to an end here in Australia.
And tomorrow is Christmas Eve.
Now I just need to get those last Christmas presents taken care of.
If you’re like me, waiting until the last minute, how about giving the gift of knowledge this year?
Electronics is not only a fun hobby, it’s knowledge that is useful in the workplace, at schools, and for budding entrepreneurs.
For example: Want to automatically turn on a light when it gets dark? The PNP transistor will make this easy for you.
In my article how transistors work, I explained how a standard NPN transistor works. If you haven’t already, I’d really urge you to read that article first.
If you understand the NPN transistor, it will make it easier to understand the PNP transistor. They work pretty much in the same way, with one major difference: The currents in the PNP transistor flow in the opposite directions of the currents in the NPN transistor.
What do you buy for Christmas for someone who’s interested in electronics? Check out these Christmas gift ideas and get the shopping over with.
Last year I received three boxes with a lot of resistors and capacitors from my family. And I absolutely loved it!
I guess a box of resistors and capacitors isn’t everyone’s cup of tea…
Instead, here are some Christmas gift ideas from me that I think every electronics-interested kid, adult or grandparent would love.
This circuit is easy to build and it’s something you can put to use right away. I built this and hung it in the window, something my girlfriend loved!
The blinking part of the circuit is made up of only 4 components. Then you’ll add as many lights as you want.
There’s some confusion going on when it comes to how to choose a power supply.
So, I thought I’d clear up some doubts, and give you a simple, beginner-friendly way of choosing a power supply.
Let’s start with the basics. A power supply has a voltage and a current specification:
I have built many circuits in my life, but this is actually the first time I’ve built a power supply circuit from scratch.
The final project I wanted to build was a wall adapter with a USB socket to charge my iPhone. But first I wanted to start by creating a simple circuit that converts from the main power voltage, 220V or 110V, to 5V.
As I’m in Australia while writing this, and the voltage here is 220V, I built this with 220V in mind. But it’s very easy to convert to 110V instead by switching one connection (or one component).
There’s a bunch of places to buy electronic components.
Myself, I love to go to a brick-and-mortar store to buy components, because then I can get them without waiting. Unfortunately, many cities don’t have these anymore. So what do you do?
Do you have an idea for an electronic product that you know will sell? Do you know how to create it?
Back in the days, my friends Olav and Elias and I were certain that we had a revolutionary product idea. We wanted to develop a touch-less controller for games, so that you could play games with your body as the controller.
We had learned a lot about circuit design at the University, but had very little practical experience. And we had never developed an electronic product before.
So many things could go wrong…