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.
The LM386 is a power amplifier designed for use in low voltage consummer applications.
Five-point graphic equalizer BA3812L rn
The circuit is based on a 16F873A microcontroller PIC.
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.
This circuit is made up of two integrated circuits: an analogue to digital converter (CA3162), and a decoder of seven segments (CA3161).
This circuit allows us to connect a 128x64 display with the PC parallel port.
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.
Pictures of some of the published electronics assemblies.
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.
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.
This amplifier is especially suited for use in 3V micro cassette recorder, mini cassette recorder, headphone stereo applications.