This circuit is from 1980s documentation. The maximum operating frequency is 3.5 MHz. The current of the LED can be from 0 to 100 mA. The integrated circuits used are from that time.
This circuit was obtained from a 1968 documentation and can be adapted to use current equivalent...
With this configuration we have a voltage follower, amplifier with unit gain, in which the output...
This setting that applies to any operational amplifier was found in an old documentation. For the indicated...