Found in American 90’s documentation, this circuit generates 300 Hz depending on the capacitors used. These components can be changed to obtain other frequencies.
We found this circuit in an English publication from 1982. The power MOSFET can be of any type and the...
This circuit amplifies the signals in the UHF band starting at 470 MHz, reaching just over 900...
This circuit is from an 80's documentation, making use of PUTs that are not currently common...