This circuit was obtained in a 90s Popular Electronics. It is used for tuning on AM radios. The field effect transistors used support equivalents.
This 80's circuitry decodes stereo signals used in analog TV at the time. The circuit can be used...
This switched power supply was found in a 70s documentation. The basic components are from that...
This circuit was obtained in a 1973 national publication, translated from an English publication of the...