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.

Crystal Test (CB13253E)
This circuit tests quartz crystals of frequencies between 100 kHz and 10 MHz. The circuit is from...
Transformerless 12V x 50mA Power Supply (CB4564E)
We found this circuit at a January 1991 Modern Electronics. The magazine no longer exists, but the...
Simple AM radio ZN416E (CB8203E)
The ZN416E integrated circuit is uncommon today. It consists of a complete radio, like the one...