This circuit is from Motorola's Linear Interface ICs from 1993. The MC1723 is the equivalent of the well-known 723. The transistor supports equivalents.
This small signal-following amplifier uses an integrated one that is not very common nowadays. Powered...
The resonant circuit depends on the crystal frequency that can go up to a few megahertz. The...
This direct conversion receiver circuit was found in Radio Electronics from the 90s. The...