Found in documentation from the 1990s, it uses a sound effects integrated circuit, the SN7677 from Texas Instruments. Unusual component these days.
Found in Popular Electronics from the 90s, this circuit is intended for a radar emitting pistol. The...
This circuit includes a protection system for the previous circuit (CB19302E) in case of a short...
This National Semiconductor (Agora Texas) precision circuit has the following characteristics: 0.01%...