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TRANSISTORS_FOR_MIXER_AND_VR_TUBES

2016-05-07 20:47  
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TRANSISTORS_FOR_MIXER_AND_VR_TUBES
TRANSISTORS_FOR_MIXER_AND_VR_TUBES
Premixer V6 in Drake T-4XB transmitter is replaced by dual-cascode MOSFETs, with CR4 protecting MOSFET from keyed-ground circuit. High-level mixer V7 operates over large dynamic range of signals coming from IF stage Output of mixer is low level, about 4 VRMS maximum. Decoupling capacitor C9 and choke High-level mixer V7 operates over large dynamic range of signals coming from IF stage Output of mixer is low level, about 4 VRMS L1 isolate JFET from high-voltage tube circuit.-H. J. Sartori, Solid-Tubes-a New Life for 0ld Designs, OST, April 1977, p 45-50.