This is a circuit suggested by Linear Technology in a 1980s documentation. The integrated circuit is from the era. Observe the input and output voltage.
This receiver was found in a 1968 publication, but can be mounted with a BC548 and BC558 in place...
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
PIC16F19197 Microcontroller Family Combines Battery-Friendly LCD Drive with Core Independent...