> Hardware
What is an electret microphone One of the most common microphone component that is used in the today's devices (eg. smartphone) is the electret microphone. The electret capsule contains, among other little details, an electret diaphragm and a JFET transistor…
How to build a power supply for DDS Function Signal Generator module After building a DDS function signal generator I found out that, in order to power it on, it requires three different input DC voltages: 12V, -12V and 5V.…
Few years ago I modified a salvaged ATX power supply to a fixed voltage bench power supply. It was very useful, I still use it, however it comes a time when you need other voltages than some fixed voltages (eg.…
One important part of electronics is converting the alternate current (AC) - the form of current delivered to our homes and offices - into a useful direct current (DC). Although I am just a newbie in this field, rather a…
After installing the rear fog light on my Nissan Murano 2009 (USA model) I thought it would worth sharing my experience with you. First I should mention that my car had already installed the OEM front fog lights so I…
In case you are willing to wire yourself the trailer to your car and you notice that your trailer AFC converter turn signals blink together you should at first follow the steps mentioned here. But what if the problem is…
A while ago I bought 40pcs poly-crystaline solar cells (5 x 2 cm2) with the hope that I will find some spare time to build a small 5W solar battery charger. Each cell provides an average of 0.28A @ 0.5V…
I have an apartment in a building where all the tenants have their storage room in the basement. I use it to store various old things there, just like anyone else. These days someone has cut one of those two…
For some time I was interested in testing methods of building a cheap solar panel using cheap solar cells and other things that you might find on the junkyard, so I've set up an experiment with the aim to build…
I had few old computers that I had to recycle. Because I'm a sentimental guy (or just stingy?) I didn't wanted to throw them out through the window so I began to collect everything that I could use later in…