High gain amplifier stage (CB20561E)

This audio amplifier stage was found in a 1963 publication. The circuit was designed to use germanium transistors. The headphone is 70-ohm.

Kinetis L Series of MCUs (COM157E)
November 2016 - Mouser Electronics is indicating in its inventories the new NXP Kinetis L MCUs....
Comparator with Hysteresis LM139 (CB4007E)
This circuit, from the 1990 Motorola Dataar Databook, can use any LM139 series comparator. The circuit...
Noise Generator (CB3909E)
This circuit uses a diode to generate white noise for various applications. One involves the...