New York, NY IMG HI 58° LO 56° Home About Contact
IMG-LOGO
Home Electrical and Electronics Electronic Devices & Circuits To observe front panel control knobs and to find amplitude, time period and frequency for given waveforms.
Electronic Devices & Circuits Lab Experiments

To observe front panel control knobs and to find amplitude, time period and frequency for given waveforms.



Title

To observe front panel control knobs and to find amplitude, time period and frequency for given waveforms.

Apparatus Required:

  1. CRO
  2. Genrator
  3. Probe

Procedure:-

  1. Understand the significance of each and every knob on the CRO.
  2. From the given function generator feed in a sinusoidal wave and adjust the time base knob and the amplitude knob to observe the waveforms a function of time.
  3. Measure the time period and amplitude (peak to peak) of the signal.Find the frequency and verify if the same frequency is given from the function generator.
  4. Observe two waveforms simultaneously on the two channels of a CRO.
  5. Repeat the above steps for pulse and triangular waveforms.
  6. Report the readings and the waveforms taken.

Measurements

Amplitude = no. of vertical divisions * Volts/div.

Time period = no. of horizontal divisions * Time/div. Frequency=(1/T)Hz

Model Graphs:

graph

Applications of CRO:

  1. Measurement of current
  2. Measurement of voltage
  3. Measurement of power
  4. Measurement of frequency
  5. Measurement of phase angle
  6. To see transistor curves
  7. To trace and measuring signals of RF, IF and AFin radio and TV.
  8. To trace visual display of sine waves.

Do and Don’ts to be strictly observed during experiment:

Do (also go through the General Instructions):

  1. Before making the connection, identify the components leads, terminal or pins before making the connections.
  2. Before connecting the power supply to the circuit, measure voltage by voltmeter/multimeter.
  3. Use sufficiently long connecting wires, rather than joining two or three small ones.
  4. The circuit should be switched off before changing any connection.
  5. Don’ts:
  6. Avoid loose connections and short circuits on the bread board.
  7. Do not exceed the voltage while taking the readings.
  8. Any live terminal shouldn't be touched while supply is on.