5 V reference LT1027 (CB14595E)

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

Sawtooth generator (CB9143E)
Indicated for scanning circuit applications, we found this generator in a Radio Electronics from the 80s....
Sawtooth generator (CB23731E)
The circuit shown in figure 3 uses a programmable unijunction transistor (PUT) of the BRY39 type...
Sonic or vox switch with latch (CB22001E)
This is the version of the previous circuit with a locking system. The supply voltage is according to...