Neil, In a Class A amplifier a D.C. bias voltage is applied to the input grid circuit. This prevents the A.C. output signal from being rectified.
Since a Class A amplifier is the least efficient, other classes of amplifiers are used for CW, FM, etc. -Tom, AG9X On Sun, May 1, 2011 at 4:23 PM, Neil M Califano <[email protected]>wrote: > How does a tube amplify AC current if tubes are used to rectify current? >
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