This amplifier for signals in the 2 m range that corresponds to 150 MHz was found in an American documentation from the 1980s. The FET can be a BF245.
This interesting control circuit was found in an Electronics Now from 1988. Through it we can...
This circuit causes neon lamps to flash randomly from a low voltage supply (1.5 to 3 V). The...
Any operational amplifier, like the 741, can be used on this oscillator whose frequency depends on R1...