Good day to all! In the previous two articles, I talked about building generators based on op-amps (an article about multivibrators here, about triangular voltage generators here). Another type of signal that is used in radio engineering and electronics is a sinusoidal signal.
To assemble a radio-electronic device, you can pre-make a DIY KIT kit using the link.
To generate a sinusoidal signal, various generator and shaper circuits are used, the consideration of which is not possible in this article.
Background
At the beginning of the millennium, our whole family moved to live in distant countries. Some of my electronic supplies followed us, but, alas, not all of them. So I found myself alone with large monoblocks that I had assembled, but not yet debugged, without an oscilloscope, without a signal generator, with a great desire to complete that project and finally listen to music. I managed to get an oscilloscope from a friend for temporary use. With the generator, I urgently had to invent something myself. At that time, I had not yet gotten used to the component suppliers available here. Among the opamps that happened to be at hand were several indigestible products of the ancient Soviet electronics industry, and an LM324 soldered from a burnt computer power supply. LM324 datasheet: National/TI, Fairchild, OnSemi... I love reading datasheets from National - they usually have a lot of interesting examples of using parts. OnSemi also helped in this case. But “Gypsy Little” deprived its followers of something
