Current to voltage converter for grounded loads (CB9338E)

Found in an Electronic Design from the 90s, this circuit uses components from that time.

Universal 3A Motor Control (CB14717E)
The circuit shown is from the 1977 GE semiconductor manual. More modern equivalent SCRs can be...
Digital Watch (CB18700E)
This digital clock has a traditional configuration with well-known CMOS integrated circuits. The...
Rectangular Oscillator (CB12685E)
The base of this circuit is one of the four Norton amplifiers existing in an LM3900 integrated circuit....