Integrated regulator (CB7512E)

This circuit was found in a RCA documentation from 1977. The integrated circuit is uncommon today. It is only a reference.

Code Practice Unijunction Oscillator (CB1430E )
e find this circuit in documentation for radio amateurs of 1974. The unijunction transistor can be...
Announcing Two New Low-Cost, Feature-Rich PIC32 Curiosity Development Boards from Microchip
Rapid Prototyping Boards for 32-bit Applications Include Peripherals, Easy-to-use Interface and...
Sound level meter (CB8225E)
This sound intensity meter was found in a 90s Elektor. The circuit uses an integrated device from...