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.

Ammeter (CB19752E)
This analog ammeter circuit was found in documentation from the 1980s. The components admit...
Hartley Oscillator (CB18144E)
This conventional Hartley oscillator circuit with an audio output transformer was found in a...
Bar or Moving Point with LM3914 (CB15677E)
This bar or moving point indicator (bargraph) employs the LM3914 and can excite 10 LEDs, of any...