Transistor gain meter (CB20522E)

This circuit was found in a publication in the 1950s, mainly applying to germanium transistors of the time.

NPN and PNP Transistor Power Switch (CB992E)
This circuit was found in a publication of the year 1968. It uses complementary transistor to...
10 to 84 MHz Colpitts oscillator (CB4052E)
This Colpitts crystal oscillator was found in an American publication for amateurs in the 1980s....
Si705x A10 I2C Temperature Sensors
August 2017 - Mouser Electronics is already stocked with Silicon Labs' I2C Si705x A10 interface...