Solar timer (CB20498E)

This very low consumption circuit can be powered by a solar cell. The time indication is given by a microammeter.

Single Bridge Circuit (CB4798E)
This metering bridge circuit uses one power supply only. The operational ones depend on the...
Sensitive Metal Detector (CB4406E)
This circuit was found in a 1992 documentation and has excellent sensitivity, using components that...
Neon Divider (CB6835E)
Found in ancient American documentation, this circuit produces a pulse every 8 Hz of a 400 Hz...