THE POWER VALVE
A DECIDED ADVANTAGE. The construction of a power valve is such that it is able to reproduce considerably amplified signals with a minimum of distortion. The actual amplification factor of these valves is comparatively small-cousiderably less than ah ordinary type of valve, which necessarily must amplify to a certain extent. Their use in the first amplifying stage will not, therefore, give a high degree of amplification, where the input of the grid of the valve is small, It is very mecessary to make this point clear, on account of the prevailing opinion among many amateurs that a power valve possesses special amplifying qualities. Nevertheless, they appear to give greater volume, because, as already explained, they are better able to handle the volume tliat. reaches. them. .
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https://paperspast.natlib.govt.nz/periodicals/RADREC19271118.2.37
Bibliographic details
Radio Record, Volume I, Issue 18, 18 November 1927, Page 11
Word Count
128THE POWER VALVE Radio Record, Volume I, Issue 18, 18 November 1927, Page 11
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