This game was found in Radio Electronics from the 90s. The components used are common except some that are from that time and that can no longer be found easily.
This circuit, obtained from the component manual used, has an ultra narrow 1 kHz range given by...
Found in a 1967 Delco documentation, this circuit can deliver power from 40 to 50 W at 8-ohm load....
This traditional configuration from a simple 12 V source is from a 1977 publication. The...