This sophisticated circuit for the 90s car was found in the 1993 edition of Radio Electronics Special Projects. It uses components that are still common today.
This circuit was found in old documentation. PUTs are uncommon components today. The circuit...
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...
This crystal oscillator generates a 20 MHz signal. Equivalent transistors such as BF494 and 2N2222...