Bench thermometer (CB20501E)

With an ultra-low consumption, this circuit can be powered by solar cells. The circuit is from a 1991 documentation.

Soldering iron control (CB7961E)
This circuit was found in a 1992 Electronics Hobbyst Handbook. The circuit is for the 110 V power...
AM Modulator TBA810 (CB16748E)
The TBA810 integrated circuit is no longer common today. This circuit shows an application of this...
800 W dimmer (CB5294E)
This soft starter dimmer was found in a 1980s documentation. We can implement it with current...