ppt on powerscope

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