Voltage doubler for EEPROM programmer (CB9323E)

This circuit from the 90s, was found in an Electronic Design of the time. The components used are uncommon today.

Intrusion Alarm (CB26238E)
This circuit triggers a buzzer or other warning device when the light falling on the sensor is cut...
High Sensitivity Fan Control (CB15519E)
Great sensitivity for the circuit can be obtained with a Darlington amplification step for the...
Three-phase motor control (CB7268E)
Suggested by Sprague in the 1980s documentation, this circuit can control three-phase AC motors....