This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on the XR2206, which is not a component found easily today.
This reverb effect was found in the December 1961 Radio Electronics magazine. It makes use of...
Found on Popular Electronics from the 1990s, this oscillator uses a general purpose transistor. The...
This simple 741 circuit was found in the August 1993 Electronics Now magazine. The source must be...