Found in a Popular Electronics from the 90s, this circuit can act as a transmitter for an audio link. The output transistor admits a higher power equivalent, depending on the LED.
An interesting bandwidth filter configuration suggested by Texas Instruments in its Linear and...
In the figure we have a circuit that allows to interface TTL logic with TTL logic, but with total...
The lighting sequence of the LEDs on this circuit, found in a 2001 documentation, is determined by the...