powerscope.pdf
- 1. POWERSCOPE POWERSCOPE POWERSCOPE BasicElectronicsEngineering 3113Aaryan Deshwal 3110Anshuman Mourya 3112 Arnav Singh
- 2. What is Powerscope Powerscope is an intrument used for display power circuit waveforms,while analyzing high voltage areas the powerscope is extremely useful tool.
- 3. Some features of Powrscope Wide range of measurement Compact Design Light Weight High degree of equipment and operator safety
- 4. More safety provisions Channels Ground and body ground are isolated to each other Attenuator provision for high voltage Precise line triggering for stable waveforms Same as CRO
- 5. Block Diagram of Powerscope
- 6. OPERATION OF POWERSCOPE OPERATION OF POWERSCOPE OPERATION OF POWERSCOPE (1.) The input signal is attenuated by a factor of 20 with the help of the input attenuator. The amplifier is capable of producing a sensitivity of around 50mV/div or 200mV/div. (2.) A matched pair of FET amplifier, which operates as a source follower comprises the input stage. It provides the current gain required to drive the main amplifier.
- 7. (3.) The trace is switched between the two channels at a rate of 100KHz in the alternate and chop modes. The ALT or CHOP mode are automatically selected by the time/div control. (4.) The vertical deflection system provides calibrated deflection which vary from 50mV/div to 200mV/div for both the channels. By using variable control the range can be extended up to 500V/div. (5.) The stable sweep triggering is done by the trigger circuit which extends beyond the bandwidth of the vertical deflection system.
- 8. (6.) The bandwidth for DC mode is DC to 15 MHz and the bandwidth for AC is 2Hz to 15 MHz in 12 ranges. (7.) The calibrated sweep rates of the horizontal deflection system varies from 0.5 s/div to 0.2 (8.) Automatic triggering or level triggering can be achieved by INT>EXT or LINE sources. (9.) The variable sweep control provides continuous reduction of the sweep rate.
- 9. (10.) To eliminate the distortions caused by the variations in the line voltage, the regulated DC power supplies are used. (11.) By using a TV synchronous circuit, the television signal can be filtered, LINE and FREME pulses can be observed and so troubleshooting of TV is useful in some applications. (12.) The output signals from channel Y1 and Y2 are connected to the storage oscilloscope. (13) It also provides additional features like XY mode, Z intensity modulation, probe compensation.
- 10. Y - shift Coupling: DC, AC, and GND Volts/div VAR Y input A basic oscilloscope consists of three different systems – the verticalsystem,horizontalsystem, and triggersystem. 1. Vertical System: Powerscope Control panel
- 11. Time/div Variable X-shift X-Y mode Triggering source Trigger level Trigger Slope 2. Horizontal System: 3. Triggering Controls:
- 12. Importance of powerscope It enables users to measure power, efficiency, transient responses and many parameters that cannot be measured by available instruments. Like a traditional oscilloscope are not designed to measure power. Example of a powerscope : PX8000
- 13. 15-06-22