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 has a gain of 6 dB for low frequencies from 85 Hz and can be used in a mini...
This is basically the same circuit as the previous one, but using PNP transistors. In the original...
This DC-DC converter was found in old RCA documentation. The circuit operates at 15 kHz. The...