This simple audio generator with the 741 was found in a 90sTexas Instruments. The circuit generates sinusoidal signals from 15 Hz to 150 kHz in 4 bands, as shown in the diagram.
Found in a 1960 Sylvania manual, this circuit can be implemented with a modern equivalent...
We found this circuit in a 2006 publication. The circuit is simple, being powered by a 9 V...
This circuit is from a Popular Electronics from the 90s, consisting of a repeater relay for remote...