Found in American documentation, this circuit for modulated infrared signals can be tuned to a certain frequency. The photodiode can be of any type.
This two-digit (up to 99) circuit divides a signal by values programmed by the BCD switches. The circuit...
Found in older American documentation, this circuit is intended for use with analog TV. The active...
This circuit is from the 1994 Linear Applications Handbook by National Semiconductor. The FET can...