Found in a 90s Popular Electronics, this circuit uses a MAR-X to amplify signals up to 2 GHz. The circuit is quite critical.
Found in a 1969s American documentation, this circuit uses transistors from that time. The...
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
This low-current control circuit has a lamp as a load, but can have other types of devices, such...