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Ems Vcs3 Type Ring Modulator

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1 2 +V 470R 3 +V +V 470R 4 +V 47K +V 33K +V 220R 2K2 D D 2 11 8 5 1 Q5 BC560 4 6 470R 9 U1A CA3046A X IN 3 X INPUT LEVEL C 10 7 16u U1B CA3046A U1C CA3046A C 100KA 47n Q1 BC550 220K 100K 100K 6K8 5KB OUTPUT LEVEL 470R 2u2 220R 220K 1K2 OUT Y IN Y INPUT LEVEL 47n Q2 BC550 100KA -V BC550 100K Q3 Q4 BC550 +V 6K8 220R B B 2u2 1K 2K7 1K 1K 27K 14 2K7 1999. Drawn by Marjan Urekar 13 12 10K 6K8 10K 6K8 VCS3 TYPE RING MODULATOR U1D CA3046A 1N4148 10K Q3 AND Q4 MATCHED TO ~1mV +V = +12V -V = -9V 1K8 A A -V 1 -V -V 2 -V 3 4