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.

Signal Weighting Circuit (CB25965E)
This circuit can be used in a signal level indicator with LEDs. The circuit is from an Electronics Now...
MAX455 Video Selector (CB25114E)
This circuit for analog video signals was found in a March 1988 Radio Electronics. The Maxim...
Bridge null detector (CB7484E)
This circuit was obtained in a 1960 transistor manual from Sylvania. The circuit can be...