This sensitive touch key appears on this website from other sources. This version was taken from a 90s American documentation. The source must not be of transformerless type.
We found this circuit in an old oscilloscope publication. With it, it is possible to observe the B...
This interesting circuit found in an old documentation uses neon lamp to indicate the percentage of...
This circuit was obtained in an American documentation translated in the 80's. The circuit can be...