We found this circuit in the Radio Electronics magazine of December 1972. It generates signals in 6 frequency bands, being indicated for experimental applications with TTL circuits.
This circuit for light data transmission (visible or IR) has a maximum speed of 1 Mbps and can be...
The circuit shown is from the 1993 Motorola Linear Interface ICs. The power source may be common...
Found in old National Semiconductor documentation, this indicator uses an integrated circuit from...