Low battery indicator 555 (CB9551E)

This circuit can operate with different voltages, depending on the zener used. We found it in a 90s American documentation.

Rectangular Pulse Generator (CB18915E)
This circuit uses a unijunction transistor in a different configuration to generate rectangular pulses at...
Ladder Generator (CB18909E)
What this circuit does is generate a signal in a ladder pattern, containing steps in which the...
50 ohm line driver 2 (CB6222E)
This circuit was suggested by General Electric / RCA in a 1980s documentation. The components are of...