High-speed buffer (CB9556E)

Found in a 1980s documentation, this circuit makes use of components from that time. Modern equivalents can be tried out.

Intercom LM386 (CB11567E)
This circuit is quite simple to assemble, having been found in a traditional American publication. The...
Oscillator with Frequency Doubler (CB18885E)
This rectangular oscillator produces signals of two frequencies, one double the other. The circuit is...
Quartz PNP Oscillator (CB18933E)
This oscillator can generate signals up to about 10 MHz, depending on the crystal used. The...