This circuit was found in a 1966 EEE. Transistors support modern equivalents and the waveforms are given next to the diagram.
This circuit is from 2002 documentation, requiring a symmetrical source of 6 to 12 V. The signal...
This circuit is from Linear Technology 2005 documentation. The circuit is based on company...
This power supply that can supply current according to the LEC is suitable for small projects. The LED...