Thornton Associates APS101 Rev D vintage precision power supply and amplifier, used in laboratory and industrial electronics for signal processing. Features aluminum housing, multiple voltage outputs (+12V, -6V, +18V, -18V, 24VAC, 150VAC), and a detailed circuit diagram. Includes multi-pin interface for device connections. Branded label and clear safety warning indicate industrial use. Unit shows some wear and discoloration typical of used lab equipment, but appears structurally intact. Ideal for collectors or restoration.
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