This circuit was obtained in a Motorola documentation from 1968. The circuit uses a power transistor of the time. Modern equivalents according to the load current and voltage can be used.
Unlike the previous one, this circuit is intended for the reception of frequency modulated signals...
Found in Electronics now from the 90s, this circuit uses a sensor from the time, which is...
We obtained this oscillator in a publication for radio amateurs in 1978. The circuit operates on...