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Etched Circuits for Audio

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Etched circuitry has advantages for both large-volume and small-volume production and for runs as short as twenty-five units. Current design practices are described, and data are presented for use in electrical and mechanical design of etched circuits. Production practices including dipsoldering are briefly outlined. New standard etched circuit boards for development-laboratory use are described: a series of six standard patterns provides basic circuitry for more than seventy-two commonly used tube types. Since no components are provided with these standard boards, the designer is free to select optimum values for his circuit conditions.

JAES Volume 2 Issue 3 pp. 171-175; July 1954
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AES - Audio Engineering Society