This is a commercial circuit from the year 1958. Transistors are germanium types and transformers and coils are hard to fild today. The circuit is destinated to the reception of medium wave stations.
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...
This circuit was obtained from Maxim documentation. The circuit has 4.5 and 5.5V thresholds for...
This amplifier circuit for instrumentation was found in the manual of the used integrated circuit...