Found in a 90s R-E Experimenter Handbook, this circuit has a greater gain than the previous one for presenting two stages. The integrated circuit used is uncommon today.
This circuit for the positive front of a rectangular signal was found in an old documentation, but applies...
The National Semiconductor LM675 operational amplifier can provide up to 3 A of output current. In the...
The interruption of the light incident on the phototransistor causes the trip of this circuit that can...