This circuit was found in documentation for radio amateurs of the 1980s. The circuit is intended to produce a tone for modulation in telegraphic transmissions.
This circuit was found in a Popular Electronics from April 1993. It is a voltage regulator circuit for...
The advantages of using Schmitt Inverters (74108) or Schmitt NAND gates (4093) in oscillators lie...
Found in an EDN from the 90's this circuit makes use of unusual components today. | Clique na...