Digital recorder ISD1016 (CB7963E)

Found in a Popular Electronics from the 90s, this digital recording circuit uses an unusual integrated circuit today.

Phase selector for remote control (CB9265E)
Found in a 1965 Electronic Design, this circuit makes it possible to select signals with an...
Current to voltage converter (CB5283E)
This circuit is from a 2005 Linear Technology publication. It converts current into load sensing...
0 to 30 V x 1A Power Supply (CB3836E)
This conventional power supply circuit with the LM317 was found in a 1987 publication and its...