Found in a 1967 Delco documentation, this circuit can deliver power from 40 to 50 W at 8-ohm load. The response ranges from 20 to 20 000 Hz. No information is given about the transformer used.
Maxim Integrated's MAX17682 integrated circuit is available at Mouser Electronics, a...
This is a traditional double timer configuration with the 555 found in a 1987 documentation. The...
Found in old English documentation this circuit can be made with a BF245 or equivalent. Coils are...