. QST . Fig. 5 Fig. 6 22 QST for form of output indication, can do quite well withno scope. Each of the accompanying photographs showsa different condition of amplifier operation ortype of signal input as seen on both a scope andthe plate milliammeter. The purpose is todemonstrate the action of the average-readnigmeter as compared to the instantaneous-readingscope. Both continuous signals and voice areused. Fig. 1 shows a two-tone test signal. This typeof signal is used to determine linearity and lackof distortion on all parts of the waveshape. Atthis time, notice only one thing. The top
. QST . Fig. 5 Fig. 6 22 QST for form of output indication, can do quite well withno scope. Each of the accompanying photographs showsa different condition of amplifier operation ortype of signal input as seen on both a scope andthe plate milliammeter. The purpose is todemonstrate the action of the average-readnigmeter as compared to the instantaneous-readingscope. Both continuous signals and voice areused. Fig. 1 shows a two-tone test signal. This typeof signal is used to determine linearity and lackof distortion on all parts of the waveshape. Atthis time, notice only one thing. The top of thepattern remains unflattened and fills up the spacebetween the limit lines. No splatter caused bydistortion of peaks occurs as long as we do nottry to exceed the limits while using this set ofamplifier conditions. This holds true in all thefollowing pictures regardless of the type of signalinput. Fig. 2 shows the amplifier being driven intodistortion on the two-tone signal. The peak linear-Fig. 1 â
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
