Found in a 90s Popular Electronics, this circuit uses a MAR-X to amplify signals up to 2 GHz. The circuit is quite critical.
We found this circuit in a publication for radio amateurs in 1974. The bipolar transistors can be...
Found in a 1980s American documentation, this circuit has a current consumption of only 1 mA. The...
This adjustable power supply was found in Ferranti's transistor manual from 1974. Power...