Buffer 4049 (CB26316E)

The purpose of this circuit found in a 1990s Popular Electronics is to increase the current capability of CMOS stages.

16 W Audio Amplifier Using the TDA1520 (CB444)
Powering from a 36 V supply this circuit has a power output of 16 W in 4 ohm loads. With 40 V and...
96 MHz Oscillator (CB9624E)
Found in old American documentation, this circuit can use crystals between 27.5 and 33 MHz...
Bell Sound (CB1492E)
This circuit generates the sound of bells. We found it in a 1977 Radio Shack publication. The...