This circuit was obtained in documentation from the 1980s. The triac and the unijunction support modern equivalents. The trigger transformer is 1: 1 turn ratio.
This circuit was found in a Popular Electronics from the 90s. The circuit has temperature...
Found in old American documentation, this receiver transmits signals via the power grid. We can...
This circuit is from the LM317's own manual obtained from an old documentation. The IC should be...