This circuit provides a few watts of output and can be used in the car as an auxiliary amplifier. Transistors must be mounted on heatsinks and the speaker can be 4 ohms or 8 ohms.
Found in Popular Electronics from March 1967, this circuit uses contemporary germanium...
The voltages in an adjusted range in the trimpots are indicated by 3 LEDs. The LEDs indicate when...
This charger for a maximum current of 15 A was obtained from an American 80's schematics. The triac must...