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Many thing
in our daily need that can be easily by implement a simple applied technology.
So our life become easy and comfort. We can make anything work automatic, or
work without our intervention so if we forget to run it, or to turn off it, they
will be done by their shelf.
By a simple
applied technology, such as electronics, we can solve many simple problem as
mentioned above. With the small dimension of electronic component and small
power too, we can realize our need, such as automatic lamp, remote controller,
water tank level controller.
Beside all
that mention above, we can make many device that valuable to our need, such as
decorative lamp, amplifier, detector etc. The simple applied electronic circuits
are divided in to two groups, analog and digital circuitry.
Analog
electronic circuits are those in which signals may vary continuously with time
to correspond to the information being represented. Electronic equipment like
voltage amplifiers, power amplifiers, tuning circuits, radios, and televisions
are largely analog (with the exception of their control sections, which may be
digital, especially in modern units).
In digital
electronic circuits, electric signals take on discrete values, which are not
dependent upon time, to represent logical and numeric values. These values
represent the information that is being processed. The transistor is one of the
primary components used in discrete circuits, and combinations of these can be
used to create logic gates. These logic gates may then be used in combination to
create a desired output from an input. In this page you can find one of the
circuit.
Simple Audio Amplifier
Rangkaian penguat daya audio sederhana seperti terlihat
pada Gambar 1, memiliki komponen utama berupa IC LM386. Dengan hanya
menambah sedikit komponen pendukung, maka IC LM386 sudah dapat difungsikan
sebagai penguat daya audio sederhana.
Karena IC LM386 dapat dicatu tegangan dalam jangkah 4 -
12 volt maka sangat cocok untuk piranti-piranti yang portable.

Gambar 1. Rangkaian penguat daya audio sederhana.

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