Sony STR-DA5000ES - Fm Stereo/fm-am Receiver Техническое обоснование - Страница 32

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One-plate/dual-pellet output transistors

How do you combine the power of parallel output transistors with the

"focus" of single-ended transistors? The STR-DA3100ES output transistors

achieve this with a one-plate/dual-pellet design. Each of these is actually a pair

of matched, high-speed transistors mounted to a common plate. In this way

operating temperatures and current fluctuations remain perfectly balanced. It's

another way that Sony fights thermal modulation distortion. As a further

protection, Sony mounts these transistors on oversized extruded aluminum heat

sinks.

With one-plate/dual-pellet output transistors, the temperature and

current fluctuations of one transistor are automatically corrected by the

complementary transistor mounted on the same plate.

With seven channels of amplification, it's difficult to maintain uniformity.

That's why Sony configured the STR-DA3100ES and DA2100ES power

amplifiers with a master in-line design. This achieves uniformity in both electrical

and mechanical characteristics, for superior richness and imaging.

Lined up in a neat row, the output transistors of the STR-DA2100ES

take advantage of Sony's Master In-Line design.

ES Receivers v1.0

Master In-Line Design

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