3 V buffer (CB7142E)

This 3 V rail to rail buffer was found in a National Semiconductor documentation. The gain is unit.

ER11 High Isolation Power Transformers (COM182E)
January 2017 - Pulse Electronics ER11 transformers with high insulation can be obtained from...
Bipolar stepper motor control (CB8456E)
Found in a 90s Popular Electronics, this circuit uses common components. The power transistors can be...
Headlight switch (CB7259E)
Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to...