Found in an Electronics News from 1970, this circuit supplies a current of up to 1 A. The integrated circuit is from the era and must be mounted on a heat sink.
This circuit converts square (rectangular) signals into triangular signals with typical 16 V...
The transistors of this circuit found in an English 1980s documentation may be the modern BC548...
In the figure we have an AND gate with the LM3900 operational transconductance amplifier. The...