Found in American documentation from the 1990s, this circuit receives modulated infrared signals. The baud rate depends on the operative used. The main application is like audio link.
The figure shows how to implement an amplifier with gain 10 using the operational amplifier LM41....
This 1980s documentation circuit uses a 741 in a different high-speed comparator configuration. The feed...
The presented circuit monitors a line indicating if it is busy if there is an extension. The...