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Ramdom Circuits

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.
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2x18W amplifier
2x18W amplifier TA8205.
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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.
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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.
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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.
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Vu meter stereo
This simple circuit is based on the well-known integrated circuit LM3915.
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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.
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Proximity sensor power on for Pc
This circuit is based on the infrared receiver IS471F. The running principle of the circuit is easy.The transmitter is an infrared LED that emits a modulated signal monitored by the 4-pin of the IS471F.
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On-off push button
On-off push button with a 12F675 microcontroller.
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Calendar clock
With the already known microcontroller PIC 16F873A and the integrated circuit DS1307 we have built this calendar clock.
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On-off sensor circuit
This circuit can be set up in any computer you want to switch on/off by bringing your finger or any object close to the sensor.
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Color coding of resistors and capacitors
Here we leave you an illustration of the color codes of resistors and capacitors and their different types of recordings in the body of the componenetees for their correct reading.
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