Music Box

As the title says it's one box which contains amplifier, speakers and LED :) I found that project when I was cleaning my room there was a watch box in that moment it seems like nice cleanly box and after some time i got amplifier and i started to combine these two. One afternoon i made sketch and said to myself that i must finish it, and that day i drill hole for input, output and also for turn ON/OFF and Volume Up/Down. That's how it started. Next...

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All About DIODES

This is the first of several tutorials about basic electronic. In this tutorial we will see symbols, uses and basics staff of DIODES. In the next tutorial known as  "Rectifier Circuits" we'll make and explain half-wave rectifier, full-wave rectifier and filtering of Voltage after that transitors etc. :)  Stay tuned. There are several types of DIODES. I'll look for the most used diodes. So let's see the Symbols. GENERIC DIODE As...

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RGB LED 3W E27 bulb

RGB LED  i bought on ebay for i don't remember how much. It was very cheap and nice looking. I ordered and it comes for 2-3 weeks. I was impressed how well packed it was. I have to say that quality build is very high, i can't complain, and IR remote controller was very good. After i tried it I realize that glows in beam/directed light. So if you have to lights up some particular part it's ok but if you want to use it for room lighting it's not...

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Illuminator

My homemade illuminator is about 25 years old, actually it's from my dad but he give it to me :). He made it in 1988-89 and till now it's still works well. I believe that will working another 25 years hahah. Design of the illuminator is really simple. For the UV bulb used mercury VTF 125W bulb without outside glass. If you creating one for yourself you have to carefully break or cut glass outside bulb(red on the picture). What is important for...

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LM7805, LM7806, LM7808, LM7809, LM7810, LM8012, LM7815

   LM7805 is voltage stabilizer, 7805 define what is output voltage in this case it's +5V. Otherwise there is a lot of voltage stabilizer like 7806, 7808, 7809, 7810, 7812, 7815 etc. in each 78XX the last two digit define output voltage. I recommend that max input Voltage is not over 10V higher than nominal value in this case if we use lm7805 -->max input V is 15V. Can you put input over 15V? Yes, of course but then lm7805 will heating...

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