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.

Line voltage compensation (CB8816E) This circuit for the alternating current line (AC line) was found in a 1965’s General Electric documentation. No information was given about the transformer. a href="image"
Line voltage compensation (CB8816E) This circuit for the alternating current line (AC line) was...
General Purpose Preamplifier (CB10980E)
This circuit was obtained in a 1982 English magazine of 1982. This circuit has three external...
Transformerless Microphone Preamplifier (CB14384E)
This circuit is based on the operational amplifier LM833 which is not a common component today. The...