Found in Texas Instruments documentation from the 1980s, this circuit applies to digital signal transmission with FSK modulation. The circuit is slow, as it uses period components.
The diodes of this circuit are for general use and the less common components can be replaced by...
We have already presented this circuit, obtained from manuals from other manufacturers of the used...
This circuit shows how to use a 3-terminal voltage regulator as a low frequency oscillator by...