The Oscilloscope - The Oscilloscope March 27th 2007...

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The Oscilloscope March 27 th , 2007 Pre-Questions: None Purpose: To observe waves generated at certain frequencies using an oscilloscope to measure voltage patterns. Inside the oscilloscope is a cathode ray tube which emits light when hit with electron. An image is produced and the generated wave can be measured and recorded. Method: The procedure was followed (26.4-26.7). In part 3, the power supply was set to 10V instead of 20V. Diagrams: The Oscilloscope Data: Part 1: Amplitude and period measurement
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f = 500Hz @ .5ms Amplitude= 4 divisions 4div x .5ms= 2ms f= 1/.002s = 500Hz Part 2: Amplitude and period of unknown Amplitude= 7.5 @ 10ms 7.5 x 10ms = 75ms f= 1/.075s = 13.33Hz Part 3: More on measuring AC voltages Amplitude= 8 5V 8 x 5V = 40V 8 x 2ms = 16ms f= 1/.016 = 62.5Hz 1/(2√2) x 20 RMS= 7.07 Part 4: Measuring DC voltages and AC on top of DC Vertical Shift: 1.5 divisions DC voltage: 10V Peak to peak: 2.5 Amplitude= 4 divisions 20mv and 2ms 2.5 x 2ms = 5ms f= 1/.005ms = 200Hz Part 5: Observing Sounds Frequency stamped on fork: 288Hz Amplitude: 2 divisions 2 x 2ms = 4ms
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