This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small incandescent lamp in frequency that depends on the capacitor.
Found in a Popular Electronics from the 90s, this Wien bridge oscillator uses a single-source...
We found this circuit in a National Semiconductor publication from the 1990s. The circuit has an...
Found in American documentation from the 1990s, this circuit generates a whistling sound when...