Voltage Follower TL081 (CB15308E)

This conventional circuit is from Motorola's 1993 Linear Interface ICs. The power source must be symmetrical.

Light Controlled Flasher (CB23526E)
This circuit with LDR and neon lamp has its operating frequency given by the light. The circuit is from...
Combined light and dark switch (CB7869E)
Found in American documentation from the 90s, this circuit can be used as a shield with the...
567 Tone Switch (CB25789E)
This tone recognizer circuit that relies on R5 and C1 was found in the December 1994 issue of...