Micro metronome (CB20743E)

This simple CMOS metronome circuit can be mounted in a small box, providing both sound and light sources.

RTD Bridge with Operational (CB4393E)
The circuit shown in the figure below is from the 1993 Linear Technology Applications. The...
AND function with relay (CB19767E)
In the figure we have the way to implement the E (AND) function with two inputs, in the case of...
Power Supply and Battery Charger (CB15851E)
This circuit can be used both as a power source and as a battery charger. The resistor R1 serves as...