5 V reference LT1027 (CB14595E)

This circuit is from the 1993 Linear Technology Applications Databook. The component is uncommon today.

7 to 15 V protected regulator (CB8679E)
Found in a 1964 Electronic Design, this circuit must use transistors according to the supplied...
Solar Robot (CB26076E)
This circuit powered by photovoltaic cells was found in the November 1998 issue of Electronics Now magazine....
Microphone Preamplifier (CB18991E)
This low impedance microphone preamp uses an operational amplifier with FET. The power supply must...