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Constant-Current Operation of Power Amplifiers

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A new technique of class A amplifier operation is described wherein change of plate current with signal is negligible. Performance is not impaired by poor power-supply regulation or use of cathode bias. A new amplifier is discussed, featuring operation into the grid-current region (class A2) and provision for automatic self-balancing of power tubes.

JAES Volume 1 Issue 1 pp. 16-21; January 1953
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AES - Audio Engineering Society