The LM3915 is an integrated circuit that uses many operational amplifiers to measure voltage level or audio volume.
Category: Semiconductors
Circuit analysis with op-amp (Part 1)
This is the first part of a series of posts that show an analysis of practical circuits that use an operational amplifier (op-amp).
Operational amplifier: how does it work?
The operational amplifier, or op-amp, has great utility on electronics. In this post, it’s shown the operation of this integrated circuit (IC).
MOSFET: how does it work?
The MOSFET is another type of field effect transistor. Much more used than JFET and it’s the most important component for digital computers.
Junction field effect transistor
The junction field effect transistor (FET) is a component with many applications. In this post, are shown the structure and the operation.
2 common base BJT amplifier projects
The common base is little known configuration for amplifiers using BJT. This type is used in high frequencies.
2 common collector BJT amplifier projects
In this post, it is shown another type of amplifier configuration using BJT. This time, it is the common collector or emitter follower.
2 projects of BJT common emitter amplifiers
In this post, it is shown how to design a BJT amplifier with voltage divider on common emitter mode. Two examples of projects are presented.
How CCD sensor works?
The CCD is the abbreviation of Charged Couple Device. This light sensor is very used to obtain images in digital cameras, telescopes and smartphones.
Laser types (Part 3, fiber laser)
In this third part, are shown the operation principle, advantages and disadvantages, and the applications of fiber laser.