21 Apr 2023cathode ray oscilloscope

21 Apr 2023tube photograph

21 Apr 2023tube diagram

H.T. supply

heater supply

y plates x plates

+-phosphor screen

anode

21 Apr 2023electron gun photograph

21 Apr 2023summary

H.T. supply

heater supply

y plates x plates

+-phosphor screen

anode

electron gun produces a beam

of electrons light produced on the screen by electron beam

a p.d. across the y plates deflects the

trace vertically

a p.d. across the x plates deflects the trace horizontally

21 Apr 2023gain andf time-base controls

21 Apr 2023peak voltage

Peak p.d. = 3 Divisions x 1.0 mV/div = 3.0 mV

21 Apr 2023period & frequency

period = 4.0 divisions x 1.0 ms/div = 4.0 ms

frequency = 1 / periodfrequency = 1 / 0.004 sfrequency = 250 Hz

21 Apr 2023self test