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Integrated circuit CD4040
The integrated circuit CD4040 is a programmable divider. Its mission is to divide the present frequency in pin 10.
How to make printed circuit boards Part 2
Now we’ll prepare the glass fiber. We are going to cut it a bit bigger than our design, leaving a small margin.
2X100W amplifier
2X100W amplifier STK4231II rn
Digital Ammeter
This circuit is made up of two integrated circuits: an analogue to digital converter (CA3162), and a decoder of seven segments (CA3161).
A Digital voltmeter
This circuit is composed of two integrated circuits. A digital analogue converter (CA3162) and a seven segment decoder (CA3161).
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.
2x10W amplifier
2x10W amplifier LA4280.
On-off push button
On-off push button with a 12F675 microcontroller.
Digital clock with pic
Digital clock with pic 16F84A.
Digital volume control circuit
This circuit is a simple digital volume control. The integrated circuit DS1669 is the one that increases or reduces the volume by means of two push buttons.
Photos of electronics assemblies
Pictures of some of the published electronics assemblies.
Twilight switch
Twilight switch with 12F629 microcontroller .
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