Found in a documentation from the 90's, this circuit already includes an amplification stage. The 12 V power supply allows its use in the car.
This oscillator with the CA3130 was obtained from an English publication from 1977. The circuit does...
We found this circuit in a technical documentation for the National Semiconductor LM3909. The...
This commercial transistor radio was manufactured by RCA in the 1960s. The circuit has only 4...