Categories
Integrated circuit CD4040
The integrated circuit CD4040 is a programmable divider. Its mission is to divide the present frequency in pin 10.
Five-point graphic equalizer
Five-point graphic equalizer BA3812L rn
Contdown 7 segment displays
Based on the Countdown with LCD 2x16, we have made this variant of the countdown. The countdown circuit, or the backwards counting we shall describe, shows the visualisation of the backwards counting on four 7 segment displays.
How to use the PC like an oscilloscope
With this simple tutorial we’ll construct an entrance to the computer to make it usable like an oscilloscope. We shall transform our PC into oscilloscope.
Digital clock with pic
Digital clock with pic 16F84A.
2x70W amplifier
2x70W amplifier STK4211V. rn
Photos of electronics assemblies
Pictures of some of the published electronics assemblies.
430mW amplifier
Single channel power amplifier with excellent audio quality. Applications in portable radios, tv sets, cassette recorders, interphones, and wireless tranceivers.
How much does it costs to run a computer?
We have compared 4 PC and their consumption, to see how much money we spend on electricity.
How to build a computer Part 3
The third power cable is the one that’ll be connected to the fans. In our case, one in the front and another in the back part of the box.
2x30W amplifier
2x30W amplifier TA8220. rn
Speaker protection circuit
This circuit is made to protect the speakers from the "pump" inconvenience, that is produced in some amplifiers while they are on.
Circuits
Circuits made with a professional design program
Tested
All circuits described have been tested
Tutorials
We extended the tutorials section periodically
Scalextric
Circuits of two and four cars made with design program
Photos
Scalextric photos