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Frequency Determination Page
SineWave Testing Page
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6J7 as pentode 6J7 as tetrode applied to horizontal applied to vertical attenuation audio axis cathode ray patterns Cathode Ray Tube characteristics of 6C5 circuit of Fig Class A amplifier Clipped peaks Compare with Fig completed-loop type Conditions CR tube distorted sine wave ellipse equal amplitudes f-m sweep full wave grid bias voltage grid voltage horizontal and vertical horizontal deflection horizontal figure horizontal plates Impure wave INPUT TO HORIZONTAL INPUT TO VERTICAL Linear sweep applied Lissajous Figures load resistor Loops covered Loops fully exposed low-frequency modulated amplifier modulation is equal Note Sketch Note operator oscillator oscilloscope Overmodulated Percentage modulation phase shift picking up 60 plate voltage points of tangency power supply Ratio 1:1 Fig Ratio 2:1 Ratio Ratio 4:1 Loops Reading list reso resonance reversed scope screen Secondary emission sine-wave input Sketch Note Sketch square wave SQUARE-WAVE TESTING system under test traced unfiltered unmodulated vertical deflecting VERTICAL PLATES GRAPH