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.
This circuit was found in old publication from 1958. The circuit uses germanium transistor, common in...
This circuit was found in a 90s Popular Electronics. The integrated circuit used is uncommon...
The transistors used in this crystal tester are general-purpose types. The circuit was found in...