HF_PREAMPLIFIER

Published:2009/6/17 23:15:00 Author:May | From:SeekIC

This HP SW receiver preamplifier is comprised of a broadband toroidal transformer (L1-a and L1-b), a complex LC network (comprised of a 1600-kHz, high-pass filter and a 32-MHz, low-pass fil-ter), L2 and L3 (26 turns of #26 enameled wire wound on an Amidon Associates T-50-2, red, toroidal core), a pair of resistive attenuators (ATTN1 and ATTN2), and of course, the MAR-x device. Exter-nal power for the preamp can be 9 to 12 Vdc. R1 can be increased in value for higher voltages.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Audio_Circuit/Pre_Amplifier/HF_PREAMPLIFIER.html

Print this Page | Comments | Reading(3)