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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 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.
In-out thermometer
In-out thermometer with 16F873A microcontroller.
Current clamp
Current clamp with a microcontroller.
Electromagnetic spectrum
In the following graph we can see how the electromagnetic waves are distributed, from the wave length 0 to 10, and at least six nanometres of gamma rays.
1W amplifier
The LM4861 is a bridge-cennected audio power amplifier capable of delivering 1.1W continuous average power to an 8 ohm load with 1% THD+N using a 5V power supply.
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.
On-off sequence of three relays with a push button
On-off sequence of three relays with a push button, microcontroller PIC 12F675.
430mW amplifier
Single channel power amplifier with excellent audio quality. Applications in portable radios, tv sets, cassette recorders, interphones, and wireless tranceivers.
How to turn on atx power supply
It’s quite simple to use, as a normal power supply, the PC power supply when we need 5 or 12 volts, which are the powers given to us by connectors from the power source ATX.
2x10W amplifier
2x10W amplifier LA4280.
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.
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