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Loudness circuit
With this circuit we recompense the human ear deficiency to perceive less sharp and less deep tones of those that a melody really has at low volume.
A Digital voltmeter
This circuit is composed of two integrated circuits. A digital analogue converter (CA3162) and a seven segment decoder (CA3161).
Twilight switch
Twilight switch with 12F629 microcontroller .
On-off push button
On-off push button with a 12F675 microcontroller.
Phono preamplifier circuit
We present you a retro assembly. This circuit was absolutely necessary years ago for us to listen to our vinyl discs. We all know what a preamplifier is, but what about R.I.A.A? R.I.A.A is a “Recording Industry Association of America”.
On-off sequence of three relays with a push button
On-off sequence of three relays with a push button, microcontroller PIC 12F675.
2x18W amplifier
2x18W amplifier TA8205.
How to make printed circuit boards Part 1
Firstly, we are to draw a circuit with a design program. There are many great programs, you just have to browse for them a little on the Internet and see which one fulfils your necessities.
Digital clock with pic
Digital clock with pic 16F84A.
2x30W amplifier
2x30W amplifier TA8220. rn
How to build a computer Part 2
Once we connect everything between the box connectors and the motherboard, we have to place DVD and hard drive.
How to build a computer Part 1
To assemble a computer part by part is actually simpler than it looks like. You only have to follow basic rules.
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