100_KC_HYBRID_BALANCED_MODULATOR

Published:2009/7/21 0:09:00 Author:Jessie | From:SeekIC

Circuit is essentially balanced bridge, with carrier injected by Q1. Balance is maintained by balance control and by bias adjustment on VI. Modulation is achieved by unbalancing bridge in accordance with low-frequency in.put signal, using phase inverter Q2 to make both tubes unbalance bridge in same direction.-J. Chirnitch, Hybrid Balanced Modulator for 100 Kc, EEE, 10:10, p 30.



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