Integrated regulator (CB7512E)

This circuit was found in a RCA documentation from 1977. The integrated circuit is uncommon today. It is only a reference.

Twin-T Oscillator Using the 741 (MSB034)
Twin-T oscillator are designed to produce sine low frequency signals. These oscillator are...
Simple milliammeter (CIR23620E)
This is the basic circuit of a milliammeter with a 50 uA instrument and 2k coil resistance....
Ring counter (CB6597E)
Found in 1967 General Electric documentation this circuit appears elsewhere in this section. SCRs are...