This circuit with the PA7601 was found in a 1967 Philco-Ford documentation. The circuit has a pass band from 45 to 120 MHz.
This circuit was found in an 80's EDN. The circuit uses a current common CMOS, the 4093 powering...
The aim of this circuit is the protection of a 2N3055 transistor, avoiding the overheat. The...
We obtained this circuit from the 1977 National Semiconductor FET Databook. The frequency depends only...