A single-page excerpt from the Hitachi 210/240 Maintenance Manual presenting Fig. 5.1.1, a block diagram of the Quad DC Amplifier. The diagram illustrates the major functional sections: Input Protective Circuit, DC Amp Portion (with output current limiter), Chopper Portion, Chopper Amplifier Portion, Chopper Portion Filter, and SI Detector (D Signal). This chopper-stabilized amplifier architecture is typical of precision analog computing elements used in the Hitachi 210/240 system.
Block Diagram of Quad DC Amplifier (Hitachi 210/240 Maintenance Manual Excerpt)
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Block Diagram
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