Neon high voltage regulator (CB8804E)

Found in a1969’s neon lamp documentation, this circuit uses a high voltage transistor. The output currents reach 100 mA.

| Clique na imagem para ampliar |

Thermocouple amplifier (CB9480E)
This circuit was found in National Semiconductor documentation from the 90s. The circuit uses two...
5-Range Digital Frequency Counter (CB24794E)
We found this circuit in the March 1984 issue of Radio Electronics magazine. The module used is a...
Emergency light (CB7044E)
This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The...