Suggested by a 1965 Electronic Design, this circuit has a gain of 15 dB at 45 MHz and can be changed to operate on other frequencies. The tetrode FET is an uncommon component today.
This circuit for old photo enlargers was found in a 1970s RCA manual. The components are from the...
Found in documentation from the 1990s, this circuit modulates the pulse width without changing its...
Found in Radio Electronics, this circuit doubles the voltage of the 117V power grid to activate...