This amplifier is from Motorola documentation from the 70s. The circuit uses transistors from the time, which are not common today, such as the SE7005 or 2N3916 at the output.
Maxim MAX16813B 4 Channel LED Driver These Maxim Integrated LED drivers are available from Mouser...
This 20 MHz bandwidth circuit was suggested by the National Semiconductor in 1970 documentation. Modern...
This trigger circuit was found in an American documentation from the 1980s. The amplifiers used...