negative-electron-affinity
negative-feedback
negative-going
negative-grid
negative-image-producing
negative-immittance
negative-impedance
negative-OR
negative-peak
negative-resist
  negative-resistance
negative-transconductance
negative-working
negator
negatron
negentropy
neighbor
neighborhood
neighboring
NEITHER-NOR
nematic

    negative-resistance parametric amplifier

     регенеративный параметрический усилитель

     регенеративный усилитель-преобразователь