Radio Systems DA-16, Руководство пользователя

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CIRCUIT DESCRIPTION
POWER SUPPLY:
A large circuit board mounted transformer and two, three terminal regulators provide DC power. In the DA-
16, one supply is used to power both circuit boards.
INPUT STAGE:
A high speed op amp, 5534, is used as a differential pre-amp. This unit exhibits low noise and high output
drive capabilities.
RFI filtering is provided by C8 and C9.
R5, R6 and R7 comprise a 6 dB pad used to raise input overload levels.
OUTPUT STAGES:
The output of IC1 feeds gain controls for each channel through a common buss. IC2, a 5534 op amp, operates
at 28 dB gain. This creates one side of the output signal. IC3, another 5534, operates as a unity gain inverter to create
the other side of the balanced output. This scheme almost doubles the available output voltage to create the high
clipping level necessary in a distribution amplifier. The 5534 integrated circuit is utilized for its high speed, high output
and low distortion capabilities.