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Full wave precision rectifier
This precise full-wave-rectifier is a circuit made to rectify those values that a normal bridge rectifier cannot rectify.The diminution of the diode bridge rectifier’s typical power is (obviously, it depends on the type of the diodes) of the 0,7 volts-an approximate value.
2x18W amplifier
2x18W amplifier TA8205.
128x64 display for Pc
This circuit allows us to connect a 128x64 display with the PC parallel port.
A Digital voltmeter
This circuit is composed of two integrated circuits. A digital analogue converter (CA3162) and a seven segment decoder (CA3161).
2x10W amplifier
2x10W amplifier LA4280.
In-out thermometer
In-out thermometer with 16F873A microcontroller.
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.
Digital thermometer circuit
A very precise digital thermometer with LM35 probe (0,1 degree of freedom).
Countdown with lcd 2x16
The circuit is based on a 16F873A microcontroller PIC.
Twilight switch
Twilight switch with 12F629 microcontroller .
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.
Digital Ammeter
This circuit is made up of two integrated circuits: an analogue to digital converter (CA3162), and a decoder of seven segments (CA3161).
Circuits
Circuits made with a professional design program
Tested
All circuits described have been tested
Tutorials
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Scalextric
Circuits of two and four cars made with design program
Photos
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