Found in a 1990 Hobbyst Handbook this circuit has an output power of a few tens of watts and serves as reinforced for the car's sound. The speaker can be 2 or 4 ohm.
The operating frequency of this circuit is 465 Hz and the input voltage is 12 VAC. The circuit is...
This circuit was found in a 90's RF Design. The circuit employs an integrated of the time. The 56 to...
Found in a 1967 Electronics World, this circuit can use any modern equivalent FET. Observe the...