Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
Often, unauthorized people use the phone to make improper calls. A control for this is achieved with...
This circuit was obtained in an Electronque Loisirs magazine from France, in a July 1991 edition. It...
This circuit sensor is an NTC with a resistance of the order of 2k. The SCR can be from the TIC...